gusucode.com > wlan工具箱matlab源码程序 > wlan/wlan/wlanVHTConfig.m
classdef wlanVHTConfig < wlanConfigBase
%wlanVHTConfig Create a very high throughput (VHT) format configuration object
% CFGVHT = wlanVHTConfig creates a very high throughput format
% configuration object. This object contains the transmit parameters for
% the VHT format of IEEE 802.11 standard.
%
% CFGVHT = wlanVHTConfig(Name,Value) creates a VHT object, CFGVHT, with
% the specified property Name set to the specified value. You can specify
% additional name-value pair arguments in any order as (Name1,Value1,
% ...,NameN,ValueN).
%
% wlanVHTConfig properties:
%
% ChannelBandwidth - Channel bandwidth
% NumUsers - Number of users
% UserPositions - User positions
% NumTransmitAntennas - Number of transmit antennas
% NumSpaceTimeStreams - Number of space-time streams
% SpatialMapping - Spatial mapping scheme
% SpatialMappingMatrix - Spatial mapping matrix(ces)
% Beamforming - Enable beamforming
% STBC - Enable space-time block coding
% MCS - Modulation and coding schemes
% ChannelCoding - Channel coding
% APEPLength - APEP lengths
% PSDULength - Number of bytes to be coded in the packet
% including the A-MPDU and any MAC padding
% GuardInterval - Guard interval type
% GroupID - Group identifier
% PartialAID - Partial association identifier
%
% % Example 1:
% % Create wlanVHTConfig object for a 40MHz, single-user configuration
%
% cfgVHT = wlanVHTConfig;
% cfgVHT.ChannelBandwidth = 'CBW40';
% disp(cfgVHT)
%
% % Example 2:
% % Create wlanVHTConfig object for a 20MHz, two-user configuration.
% % Each element of vector-valued properties apply to a specific user.
%
% cfgMU = wlanVHTConfig('ChannelBandwidth', 'CBW20', ...
% 'NumUsers', 2, ...
% 'GroupID', 2, ...
% 'NumTransmitAntennas', 2);
% cfgMU.NumSpaceTimeStreams = [1 1];
% cfgMU.MCS = [4 8];
% cfgMU.APEPLength = [1024 2048];
% disp(cfgMU)
%
% See also wlanWaveformGenerator, wlanHTConfig, wlanNonHTConfig,
% wlanS1GConfig.
% Copyright 2015-2016 The MathWorks, Inc.
%#codegen
properties (Access = 'public')
%ChannelBandwidth Channel bandwidth (MHz) of PPDU transmission
% Specify the channel bandwidth as one of 'CBW20' | 'CBW40' | 'CBW80'
% | 'CBW160'. The default value of this property is 'CBW80'.
ChannelBandwidth = 'CBW80';
%NumUsers Number of users
% Specify the number of users as an integer scalar between 1 and 4,
% inclusive. The default value of this property is 1.
NumUsers = 1;
%UserPositions User positions
% Specify the user positions as an integer row vector with length
% equal to NumUsers and elements between 0 and 3, inclusive, in a
% strictly increasing order. This property applies when you set the
% NumUsers property to 2, 3 or 4. The default value of this property
% is [0 1].
UserPositions = [0 1];
%NumTransmitAntennas Number of transmit antennas
% Specify the number of transmit antennas as an integer scalar
% between 1 and 8, inclusive. The default value of this property is
% 1.
NumTransmitAntennas = 1;
%NumSpaceTimeStreams Number of space-time streams per user
% Specify the number of space-time streams as integer scalar or row
% vector with length equal to NumUsers. For a scalar, it must be
% between 1 and 8, inclusive. For a row vector, all elements must be
% between 1 and 4, inclusive, and sum to no larger than 8. The
% default value of this property is 1.
NumSpaceTimeStreams = 1;
%SpatialMapping Spatial mapping scheme
% Specify the spatial mapping scheme as one of 'Direct' | 'Hadamard'
% | 'Fourier' | 'Custom'. The default value of this property is
% 'Direct', which applies when the sum of the elements in
% NumSpaceTimeStreams is equal to NumTransmitAntennas.
SpatialMapping = 'Direct';
%SpatialMappingMatrix Spatial mapping matrix(ces)
% Specify the spatial mapping matrix(ces) as a real or complex, 2D
% matrix or 3D array. This property applies when you set the
% SpatialMapping property to 'Custom'. It can be of size
% NstsTotal-by-Nt, where NstsTotal is the sum of the elements in the
% NumSpaceTimeStreams property and Nt is the NumTransmitAntennas
% property. In this case, the spatial mapping matrix applies to all
% the subcarriers. Alternatively, it can be of size Nst-by-
% NstsTotal-Nt, where Nst is the number of occupied subcarriers
% determined by the ChannelBandwidth property. Specifically, Nst is
% 56 for 'CBW20', 114 for 'CBW40', 242 for 'CBW80' and 484 for
% 'CBW160'. In this case, each occupied subcarrier can have its own
% spatial mapping matrix. In either 2D or 3D case, the spatial
% mapping matrix for each subcarrier is normalized. The default value
% of this property is 1.
SpatialMappingMatrix = 1;
%Beamforming Enable beamforming
% Set this property to true when the specified SpatialMappingMatrix
% property is a beamforming steering matrix(ces). This property
% applies when you set the NumUsers property to 1 and the
% SpatialMapping property to 'Custom'. The default value of this
% property is true.
Beamforming = true;
%STBC Enable space-time block coding
% Set this property to true to enable space-time block coding in the
% data field transmission. This property applies when you set the
% NumUsers property to 1. The default value of this property is
% false.
STBC = false;
%MCS Modulation and coding scheme per user
% Specify the modulation and coding scheme per user as an integer
% scalar or row vector with length equal to NumUsers. Its elements
% must be integers between 0 and 9, inclusive. A scalar value applies
% to all users. The default value of this property is 0.
MCS = 0;
%ChannelCoding Forward error correction coding type
% Specify the channel coding as one of 'BCC' | 'LDPC' to indicate
% binary convolution coding (BCC) or low-density-parity-check (LDPC)
% coding. The default is 'BCC'. The property can take a char or cell
% array input. For a single user a char or a single cell value
% defines the ChannelCoding type. For multiple users, a char or a
% single cell input is applied to all users. A cell array can be used
% to specify different channel coding types per user for a multiuser
% transmission. The default value is 'BCC'.
ChannelCoding = 'BCC';
end
properties (SetAccess = 'public')
%APEPLength APEP length per user
% Specify the APEP length in bytes per user as an integer scalar or
% row vector with length equal to NumUsers. A scalar value applies to
% all users. All elements must be integers between 1 and 1048575,
% inclusive. In addition, this property can be 0 when the NumUsers
% property is 1, which implies a VHT non-data-packet (NDP). The
% default value of this property is 1024.
APEPLength = 1024;
end
properties (SetAccess = private, GetAccess = public)
%PSDULength PSDU lengths
% The number of bytes carried in a packet, including the A-MPDU and
% any MAC padding. This property is read-only and is calculated
% internally based on other properties.
PSDULength;
end
properties (Access = 'public')
%GuardInterval Guard interval type
% Specify the guard interval (cyclic prefix) type for data field
% transmission as one of 'Long' | 'Short'. The default value of this
% property is 'Long'.
GuardInterval = 'Long';
%GroupID Group identifier
% Specify the group identifier as an integer scalar. It must be 0 or
% 63 when the NumUsers property is 1 and must be between 1 and 62
% inclusive when the NumUsers property is 2, 3 or 4. The default
% value of this property is 63.
GroupID = 63;
%PartialAID Partial association identifier
% Specify the partial association identifier of the intended
% recipient as an integer scalar between 0 and 511, inclusive. This
% property applies when you set the NumUsers property to 1. For an
% uplink transmission, it is the last nine bits of the BSSID. For a
% downlink transmission, it combines the association ID and the BSSID
% of its serving AP. The default value of this property is 275.
PartialAID = 275;
end
properties(Constant, Hidden)
ChannelBandwidth_Values = {'CBW20', 'CBW40','CBW80','CBW160'};
SpatialMapping_Values = {'Direct', 'Hadamard', 'Fourier', 'Custom'}
GuardInterval_Values = {'Short', 'Long'};
ChannelCoding_Values = {'BCC','LDPC'};
end
methods
function obj = wlanVHTConfig(varargin)
obj@wlanConfigBase( ...
'ChannelBandwidth', 'CBW80', ...
'SpatialMapping', 'Direct', ...
'GuardInterval', 'Long', ...
varargin{:});
end
function obj = set.ChannelBandwidth(obj,val)
propName = 'ChannelBandwidth';
validateEnumProperties(obj, propName, val);
obj.(propName) = '';
obj.(propName) = val;
end
function obj = set.NumUsers(obj, val)
propName = 'NumUsers';
validateattributes(val, {'numeric'}, ...
{'real','integer','scalar','>=',1,'<=',4}, ...
[class(obj) '.' propName], propName);
obj.(propName)= val;
end
function obj = set.UserPositions(obj, val)
propName = 'UserPositions';
validateattributes(val, {'numeric'}, ...
{'real','integer','row','>=',0,'<=',3,'increasing'}, ...
[class(obj) '.' propName], propName);
obj.(propName) = val;
end
function obj = set.NumTransmitAntennas(obj, val)
propName = 'NumTransmitAntennas';
validateattributes(val, {'numeric'}, ...
{'real','integer','scalar','>=',1,'<=',8}, ...
[class(obj) '.' propName], propName);
obj.(propName) = val;
end
function obj = set.NumSpaceTimeStreams(obj, val)
propName = 'NumSpaceTimeStreams';
validateattributes(val, {'numeric'}, ...
{'real','integer','row','>=',1,'<=',8}, ...
[class(obj) '.' propName], propName);
coder.internal.errorIf(~isscalar(val) && ...
((length(val) > 4) || any(val > 4) || sum(val) > 8), ...
'wlan:shared:InvalidMUSTS', 4, 4, 8);
obj.(propName) = val;
end
function obj = set.SpatialMapping(obj, val)
propName = 'SpatialMapping';
validateEnumProperties(obj, propName, val);
obj.(propName) = '';
obj.(propName) = val;
end
function obj = set.SpatialMappingMatrix(obj, val)
propName = 'SpatialMappingMatrix';
validateattributes(val, {'double'}, {'3d','finite','nonempty'}, ...
[class(obj) '.' propName], propName);
is3DFormat = (ndims(val) == 3) || (iscolumn(val) && ~isscalar(val));
numSTS = size(val, 1+is3DFormat);
numTx = size(val, 2+is3DFormat);
numST = [56 114 242 484]; % Total number of occupied subcarriers
coder.internal.errorIf( ...
(is3DFormat && ~any(size(val, 1) == numST)) || ...
(numSTS > 8) || (numTx > 8) || (numSTS > numTx), ...
'wlan:shared:InvalidSpatialMapMtxDim', 8, '56, 114, 242 or 484');
obj.(propName) = val;
end
function obj = set.Beamforming(obj, val)
propName = 'Beamforming';
validateattributes(val, {'logical'}, {'scalar'}, ...
[class(obj) '.' propName], propName);
obj.(propName) = val;
end
function obj = set.STBC(obj, val)
propName = 'STBC';
validateattributes(val, {'logical'}, {'scalar'}, ...
[class(obj) '.' propName], propName);
obj.(propName) = val;
end
function obj = set.MCS(obj, val)
propName = 'MCS';
validateattributes(val, {'numeric'}, ...
{'real','integer','row','>=',0,'<=',9}, ...
[class(obj) '.' propName], propName);
coder.internal.errorIf(length(val) > 4, ...
'wlan:shared:InvalidMUMCS', 4);
obj.(propName) = val;
end
function obj = set.ChannelCoding(obj, val)
propName = 'ChannelCoding';
if iscell(val)
coder.internal.errorIf( ...
(length(val) > 4) || isempty(val), ...
'wlan:wlanVHTConfig:InvalidChCoding');
for u = 1:length(val)
validateEnumProperties(obj, propName, val{u});
end
else
validateEnumProperties(obj, propName, val);
obj.(propName) = '';
end
obj.(propName) = val;
end
function obj = set.APEPLength(obj, val)
propName = 'APEPLength';
maxBytes = 1048575; % Maximum number of bytes
validateattributes(val, {'numeric'}, ...
{'real','integer','row','>=',0,'<=',maxBytes}, ...
[class(obj) '.' propName], propName);
coder.internal.errorIf(~isscalar(val) && ...
((length(val) > 4) || any(val == 0)), ...
'wlan:shared:InvalidMUAPEPLen', 4);
obj.(propName) = val;
end
function obj = set.GuardInterval(obj, val)
propName = 'GuardInterval';
validateEnumProperties(obj, propName, val);
obj.(propName) = '';
obj.(propName) = val;
end
function obj = set.GroupID(obj, val)
propName = 'GroupID';
validateattributes(val, {'numeric'}, ...
{'real','scalar','integer','>=',0,'<=',63}, ...
[class(obj) '.' propName], propName);
obj.(propName) = val;
end
function obj = set.PartialAID(obj, val)
propName = 'PartialAID';
validateattributes(val, {'numeric'}, ...
{'real','scalar','integer','>=',0,'<=',511}, ...
[class(obj) '.' propName], propName);
obj.(propName) = val;
end
function PSDULen = get.PSDULength(obj)
% Returns PSDU length in bytes for all users.
s = validateConfig(obj,'MCS');
PSDULen = s.PSDULength;
end
function varargout = validateConfig(obj, varargin)
% validateConfig Validate the wlanVHTConfig object
% validateConfig(CFGVHT) validates the dependent properties for the
% specified wlanVHTConfig configuration object.
%
% For INTERNAL use only, subject to future changes:
%
% validateConfig(CFGVHT, MODE) validates only the subset of dependent
% properties as specified by the MODE input. MODE must be one of:
% 'SpatialMCSGID'
% 'SMapping'
% 'MCS'
% 'MCSSTSTx'
% 'SMappingMCS'
narginchk(1,2);
nargoutchk(0,1);
if (nargin==2)
mode = varargin{1};
else
mode = 'Full';
end
switch mode
case 'SpatialMCSGID' % VHT-SIG-A
validateSpatial(obj);
s = validateMCSLength(obj);
validateGIDAndUserPos(obj);
case 'SMapping' % VHT-STF, VHT-LTF
validateSpatialMapping(obj);
case 'MCS' % wlanVHTDataRecover
s = validateMCSLength(obj);
case 'MCSSTSTx' % L-SIG
validateSTSTx(obj);
s = validateMCSLength(obj);
case 'SMappingMCS' % VHT-SIG-B, VHT-Data
validateSpatialMapping(obj);
s = validateMCSLength(obj);
otherwise % wlanWaveformGenerator
% Full object validation
validateSpatialMapping(obj);
s = validateMCSLength(obj);
validateGIDAndUserPos(obj);
end
if nargout == 1
varargout{1} = s;
end
end
end
methods (Access = protected)
function flag = isInactiveProperty(obj, prop)
flag = false;
if any(strcmp(prop, {'STBC', 'PartialAID'}))
flag = (obj.NumUsers > 1);
elseif strcmp(prop, 'UserPositions')
flag = (obj.NumUsers == 1);
elseif strcmp(prop, 'SpatialMappingMatrix')
flag = ~strcmp(obj.SpatialMapping, 'Custom');
elseif strcmp(prop, 'Beamforming')
flag = (obj.NumUsers > 1) || ~strcmp(obj.SpatialMapping, 'Custom');
elseif strcmp(prop, 'PSDULength')
% Always hide the property
flag = true;
end
end
end
methods (Access = private)
function s = privInfo(obj)
%privInfo Returns information relevant to the object
% S = privInfo(cfgVHT) returns a structure, S, containing the
% relevant information for the wlanVHTConfig object, cfgVHT.
% The output structure S has the following fields:
%
% NumDataSymbols - Number of OFDM symbols for the Data field
% NumPadBits - Number of pad bits in the Data field
% NumPPDUSamples - Number of PPDU samples per transmit antennas
% TxTime - The time in microseconds, required to
% transmit the PPDU.
% PSDULength - The number of bytes carried in a packet,
% including the A-MPDU and any MAC padding.
% ExtraLDPCSymbol - An indication of an extra OFDM symbol added due
% to LDPC encoding.
numUsers = obj.NumUsers;
APEPLen = repmat(obj.APEPLength, 1, numUsers/length(obj.APEPLength));
mcsTable = wlan.internal.getRateTable(obj);
numDBPS = mcsTable.NDBPS;
numES = mcsTable.NES;
rate = mcsTable.Rate;
mSTBC = (numUsers == 1)*(obj.STBC ~= 0) + 1;
LDPCSymbol = 0;
numDataBCCsymbols = 0;
% Calculate number of OFDM symbols
if isscalar(obj.APEPLength) && (obj.APEPLength(1) == 0) % NDP
numDataSymbols = 0;
numPadBits = 0;
PSDULen = 0;
else
% Get ChannelCoding property to a cell
channelCoding = getChannelCoding(obj);
userCodingIndex = zeros(1,numUsers);
for u=1:numUsers
userCodingIndex(u) = strcmp(channelCoding{u}, 'BCC');
end
indBCC = find(userCodingIndex == 1);
indLDPC = find(userCodingIndex == 0);
PSDULen = zeros(1,numUsers);
numPadBits = zeros(1,numUsers);
numSymbolsLDPC = zeros(1,numUsers);
numDataSymbols = 0;
numTailBits = 6; % For BCC encoding
if ~isempty(indBCC)
numDataSymbols = max(mSTBC*ceil((8*APEPLen(indBCC) + 16 + ...
numTailBits*numES(indBCC))./(mSTBC.*numDBPS(indBCC))));
PSDULen(indBCC) = floor((numDataSymbols*numDBPS(indBCC) - 16 - numTailBits*numES(indBCC))./8);
numPadBits(indBCC) = numDataSymbols*numDBPS(indBCC) - ...
(8*PSDULen(indBCC) + 16 + numTailBits*numES(indBCC));
numDataBCCsymbols = numDataSymbols;
end
if ~isempty(indLDPC)
% LDPC encoding parameters as defined in IEEE Std 802.11-2012,
% IEEE Std 802.11ac-2013
numSymbolsLDPC(indLDPC) = mSTBC * ceil((8*APEPLen(indLDPC) + 16)./(mSTBC * numDBPS(indLDPC))); % Eq 22-64
numSymMaxInit = max([numDataSymbols,numSymbolsLDPC(indLDPC)]); % Eq 22-65-MU, Eq 22-62-SU
PSDULen(indLDPC) = floor((numSymMaxInit * numDBPS(indLDPC) - 16)./8); % Eq 22-114
numPadBits(indLDPC) = numSymMaxInit.*numDBPS(indLDPC) - 8*PSDULen(indLDPC) - 16; % Eq 22-57, Eq 22-58
numSymbol = zeros(1, size(indLDPC,2));
for u = 1:size(indLDPC,2)
numPLD = numSymMaxInit*numDBPS(indLDPC(u));
cfg = wlan.internal.getLDPCparameters(numDBPS(indLDPC(u)), rate(indLDPC(u)), mSTBC, numPLD);
numSymbol(u) = cfg.NumSymbol; % Eq 22-67
end
if max(numSymbol)>numSymMaxInit
numDataSymbols = max(numSymbol);
LDPCSymbol = 1;
else
numDataSymbols = max(numSymMaxInit);
end
end
% Update BCC length and padded bits for BCC
if ~isempty(indBCC) && (numDataSymbols ~= numDataBCCsymbols)
% Recalculate PSDU length Eq: 22-114
PSDULen(indBCC) = floor((numDataSymbols.*numDBPS(indBCC) - 16 - numTailBits*numES(indBCC))./8);
numPadBits(indBCC) = numDataSymbols.*numDBPS(indBCC) - ...
(8*PSDULen(indBCC) + 16 + numTailBits*numES(indBCC));
end
end
% Calculate burst time
NVHTLTFVec = [1 2 4 4 6 6 8 8];
numPreambSym = 4 + 1 + 2 + 1 + NVHTLTFVec(sum(obj.NumSpaceTimeStreams)) + 1;
FFTLen = 64 * str2double(obj.ChannelBandwidth(4:end))/20;
if strcmp(obj.GuardInterval, 'Short')
txTime = 4*numPreambSym + 4*ceil(numDataSymbols*3.6/4);
numPPDUSamples = numPreambSym*FFTLen*5/4 + numDataSymbols*FFTLen*9/8;
else
txTime = 4*numPreambSym + 4*numDataSymbols;
numPPDUSamples = (numPreambSym + numDataSymbols)*FFTLen*5/4;
end
% Set output structure
s = struct(...
'NumDataSymbols', numDataSymbols, ... % Eq 22-67
'NumPadBits', numPadBits, ...
'NumPPDUSamples', numPPDUSamples, ...
'TxTime', txTime, ...
'PSDULength', PSDULen, ...
'ExtraLDPCSymbol', LDPCSymbol);
end
function validateSTSTx(obj)
% ValidateSTSTx Validate NumTransmitAntennas, NumSpaceTimeStreams
% properties for wlanVHTConfig object
% NumTx and Nsts: numTx cannot be less than sum(Nsts)
coder.internal.errorIf(obj.NumTransmitAntennas < sum(obj.NumSpaceTimeStreams), ...
'wlan:shared:NumSTSLargerThanNumTx');
end
function validateSpatial(obj)
% validateSpatial Validate the spatial properties for the
% wlanVHTConfig object
% Validated property-subset includes:
% NumTransmitAntennas, NumSpaceTimeStreams, SpatialMapping
validateSTSTx(obj);
coder.internal.errorIf(strcmp(obj.SpatialMapping, 'Direct') && ...
(sum(obj.NumSpaceTimeStreams) ~= obj.NumTransmitAntennas), ...
'wlan:shared:NumSTSNotEqualNumTxDirectMap');
end
function validateSpatialMapping(obj)
% validateSpatialMapping Validate the spatial mapping properties for
% the wlanVHTConfig object
% Validated property-subset includes:
% ChannelBandwidth, NumTransmitAntennas, NumSpaceTimeStreams, ..
% SpatialMapping, SpatialMappingMatrix
validateSpatial(obj);
if strcmp(obj.SpatialMapping, 'Custom')
% Validate spatial mapping matrix
SPMtx = obj.SpatialMappingMatrix;
is3DFormat = (ndims(SPMtx) == 3) || (iscolumn(SPMtx) && ~isscalar(SPMtx));
numSTSTotal = size(SPMtx, 1+is3DFormat);
numTx = size(SPMtx, 2+is3DFormat);
switch obj.ChannelBandwidth
case 'CBW20'
numST = 56;
case 'CBW40'
numST = 114;
case 'CBW80'
numST = 242;
otherwise
numST = 484;
end
coder.internal.errorIf( ...
(is3DFormat && (size(SPMtx, 1) ~= numST)) || ...
(numSTSTotal ~= sum(obj.NumSpaceTimeStreams)) || ...
(numTx ~= obj.NumTransmitAntennas), ...
'wlan:shared:MappingMtxNotMatchOtherProp', ...
sum(obj.NumSpaceTimeStreams), obj.NumTransmitAntennas, numST);
end
end
function s = validateMCSLength(obj)
%ValidateMCSLength Validate MCS and Length properties for
% wlanVHTConfig configuration object
% Validated property-subset includes:
% ChannelBandwidth, NumUsers, NumSpaceTimeStreams, STBC, MCS,
% ChannelCoding, GuardInterval, APEPLength
numUsers = obj.NumUsers;
coder.internal.errorIf( ...
iscell(obj.ChannelCoding) && ....
(length(obj.ChannelCoding)~= obj.NumUsers) && ...
(length(obj.ChannelCoding)>1), ...
'wlan:wlanVHTConfig:InvalidChCoding');
coder.internal.errorIf(length(obj.NumSpaceTimeStreams) ~= ...
obj.NumUsers, 'wlan:shared:InvalidSTSNumUsers');
coder.internal.errorIf((numUsers == 1) && obj.STBC && ...
all(mod(obj.NumSpaceTimeStreams, 2) == 1), ...
'wlan:shared:OddNumSTSWithSTBC');
coder.internal.errorIf(all(length(obj.MCS) ~= [1 numUsers]), ...
'wlan:shared:InvalidMCSNumUsers');
coder.internal.errorIf(all(length(obj.APEPLength) ~= [1 numUsers]) || ...
((numUsers > 1) && any(obj.APEPLength == 0)), ...
'wlan:shared:InvalidAPEPLenNumUsers');
% Check Bandwidth/MCS/Nss valid combinations
% Reference: Tables 22-30:22-56, IEEE Std 802.11ac-2013
invalidComb = ...
[20, 9, 1; ... % [chanBW, MCS, numSS]
20, 9, 2; ...
20, 9, 4; ...
20, 9, 5; ...
20, 9, 7; ...
20, 9, 8; ...
80, 6, 3; ...
80, 6, 7; ...
80, 9, 6; ...
160, 9, 3];
chanBW = str2double(obj.ChannelBandwidth(4:end));
vecMCS = repmat(obj.MCS, 1, numUsers/length(obj.MCS));
numSS = obj.NumSpaceTimeStreams / (((numUsers == 1) && obj.STBC) + 1);
for u = 1:numUsers
thisComb = [chanBW, vecMCS(u), numSS(u)];
coder.internal.errorIf(any(ismember(invalidComb, thisComb, 'rows')), ...
'wlan:shared:InvalidMCSCombination', ...
['''', obj.ChannelBandwidth, ''''], ...
obj.NumSpaceTimeStreams(u), vecMCS(u), u);
end
% Validate PSDULength for txTime (max 5.484ms for VHT format)
s = privInfo(obj);
coder.internal.errorIf(s.TxTime>5484, ...
'wlan:shared:InvalidPPDUDuration', round(s.TxTime), 5484);
end
function validateGIDAndUserPos(obj)
% validateGIDAndUserPos Validate UserPositions and GroupID against
% NumUsers for wlanVHTConfig object.
% Validated property-subset includes:
% NumUsers, UserPositions, GroupID
coder.internal.errorIf((obj.NumUsers > 1) && ...
(length(obj.UserPositions) ~= obj.NumUsers), ...
'wlan:shared:InvalidUserPosNumUsers');
coder.internal.errorIf(xor((obj.NumUsers == 1), ...
any(obj.GroupID == [0 63])), ...
'wlan:wlanVHTConfig:InvalidGIDNumUsers');
end
end
methods (Access = public)
function channelCoding = getChannelCoding(obj)
% Initialize to max number of users
coder.varsize('channelCoding',[1,4]);
if ischar(obj.ChannelCoding)
channelCoding = repmat({obj.ChannelCoding},1,obj.NumUsers);
elseif (length(obj.ChannelCoding) == 1) && (iscell(obj.ChannelCoding))
channelCoding = repmat(obj.ChannelCoding,1,obj.NumUsers);
else
channelCoding = obj.ChannelCoding;
end
end
end
end
% [EOF]