function?rx_signal?=?channel（tx_signal?cir?sim_options）;

global?sim_consts;
%?選擇天線數(shù)量
[n_tx_antennas?n_rx_antennas]?=?get_n_antennas（sim_options）;

%?Channel?effect
rx_signal?=?zeros（n_rx_antennas?size（tx_signal2）+size（cir2）-1）;
%?所定義的列數(shù)為卷積長度
for?rx_ant?=?1:n_rx_antennas???
???for?tx_ant?=?1:n_tx_antennas
??????rx_signal（rx_ant:）?=?rx_signal（rx_ant:）?+?...
?????????conv（tx_signal（tx_ant:）?cir（（rx_ant-1）*n_tx_antennas+tx_ant:））;
???end
end

len?=?size（rx_signal?2）;?%?列長度

%?Add?noise
%?calculate?noise?variance
%?64/52?scale?factor?normalizes?the?noise?with?the?used?subcarrier?number
noise_var?=?64/52/（10^（sim_options.SNR/10））/2;

noise?=?sqrt（noise_var）?*?（randn（n_rx_antennas?len）?+?j*randn（n_rx_antennas?len））;??%?歸一化噪聲

extra_noise?=?sqrt（noise_var）?*?（randn（n_rx_antennassim_consts.ExtraNoiseSamples）?+?...
???j*randn（n_rx_antennas?sim_consts.ExtraNoiseSamples））;

%?end?noise?is?added?to?prevent?simulation?from?crashing?from?incorrect?timing?in?receiver
end_noise?=?sqrt（noise_var）?*?（randn（n_rx_antennas170）?+?j*randn（n_rx_antennas?170））;

%?add?noise
rx_signal?=?rx_signal+noise;

%?extra?noise?samples?are?inserted?before?the?packet?to?test?the?packet?search?algorithm
rx_signal?=?[extra_noise?rx_signal?end_noise];

%Create?frequency?offset
rx_signal?=?create_freq_offset（rx_signal?sim_options.FreqError）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-10-11?22:10??802.11a_simulation?with?matlab\
?????文件?????2028489??2016-10-08?11:35??802.11a_simulation?with?matlab\802.11a中文.pdf
?????文件????????1412??2016-10-10?10:51??802.11a_simulation?with?matlab\channel.m
?????文件?????????400??2006-11-07?14:39??802.11a_simulation?with?matlab\create_freq_offset.m
?????文件?????????380??2006-11-07?14:39??802.11a_simulation?with?matlab\get_bits_per_symbol.m
?????文件????????1165??2016-10-11?15:23??802.11a_simulation?with?matlab\get_channel_ir.m
?????文件?????????273??2008-07-17?16:05??802.11a_simulation?with?matlab\get_n_antennas.m
?????文件?????????554??2006-11-07?14:39??802.11a_simulation?with?matlab\get_punc_params.m
?????文件???????10454??2008-07-19?16:43??802.11a_simulation?with?matlab\hs_err_pid3712.log
?????文件????????1056??2006-11-07?14:39??802.11a_simulation?with?matlab\phase_noise_model.m
?????文件?????????588??2006-11-07?14:39??802.11a_simulation?with?matlab\readme.txt
?????文件????????2449??2016-10-11?10:36??802.11a_simulation?with?matlab\receiver.asv
?????文件????????2485??2016-10-11?10:41??802.11a_simulation?with?matlab\receiver.m
?????文件????????2600??2006-11-07?14:39??802.11a_simulation?with?matlab\runsim.m
?????文件??????????88??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_bpsk_demod.m
?????文件?????????577??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_deinterleave.m
?????文件?????????607??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_demodulate.m
?????文件?????????906??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_depuncture.m
?????文件????????2559??2016-10-11?22:06??802.11a_simulation?with?matlab\rx_diversity_proc.asv
?????文件????????2456??2016-10-11?21:43??802.11a_simulation?with?matlab\rx_diversity_proc.m
?????文件????????1467??2016-10-10?21:02??802.11a_simulation?with?matlab\rx_estimate_channel.m
?????文件????????1729??2016-10-10?11:04??802.11a_simulation?with?matlab\rx_find_packet_edge.m
?????文件????????1739??2010-04-02?10:07??802.11a_simulation?with?matlab\rx_fine_time_sync.m
?????文件????????1501??2016-10-10?19:56??802.11a_simulation?with?matlab\rx_frequency_sync.m
?????文件?????????461??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_gen_chan_amps.m
?????文件?????????444??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_gen_deintlvr_patt.m
?????文件?????????761??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_init_viterbi.m
?????文件?????????292??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_mr_combiner.m
?????文件?????????620??2010-04-02?10:25??802.11a_simulation?with?matlab\rx_phase_tracker.m
?????文件????????3502??2010-04-02?10:35??802.11a_simulation?with?matlab\rx_pilot_phase_est.m
?????文件?????????475??2006-11-07?14:39??802.11a_simulation?with?matlab\rx_qam16_demod.m
............此處省略27個文件信息