function?[mod_symbolssym_tableM]?=?modulator（bitseqb）

%MIMO-OFDM?Wireless?Communications?with?MATLAB㈢???Yong?Soo?Cho?Jaekwon?Kim?Won?Young?Yang?and?Chung?G.?Kang
%?2010?John?Wiley?&?Sons?（Asia）?Pte?Ltd

N_bits?=?length（bitseq）;
if?b==1??????%?BPSK?modulation
???sym_table=exp（j*[0?-pi]）;??sym_table=sym_table（[1?0]+1）;
???inp=bitseq;???mod_symbols=sym_table（inp+1）;???M=2;
?elseif?b==2????%?QPSK?modulation
???sym_table?=?exp（j*pi/4*[-3?3?1?-1]）;?sym_table=sym_table（[0?1?3?2]+1）;
???inp=reshape（bitseqbN_bits/b）;
???mod_symbols=sym_table（[2?1]*inp+1）;???M=4;
?elseif?b==3????%?generates?8PSK?symbols
???sym_table=exp（j*pi/4*[0:7]）;?sym_table=sym_table（[0?1?3?2?6?7?5?4]+1）;
???inp=reshape（bitseqbN_bits/b）;?mod_symbols=sym_table（[4?2?1]*inp+1）;
???M=8;???
?elseif?b==4????%?16-QAM?modulation
???m=0;??sq10=sqrt（10）;
???for?k=-3:2:3
??????for?l=-3:2:3
?????????m=m+1;?sym_table（m）?=?（k+j*l）/sq10;?%?power?normalization
??????end
???end
???sym_table?=?sym_table（[0?1?3?2?4?5?7?6?12?13?15?14?8?9?11?10]+1）;?%?Gray?code?mapping?pattern?for?8-PSK?symbols
???inp?=?reshape（bitseqbN_bits/b）;
???mod_symbols?=?sym_table（[8?4?2?1]*inp+1）;??%?maps?transmitted?bits?into?16QAM?symbols
???M=16;?%16?constellation?points
?else
???error（‘Unimplemented?modulation‘）;
end

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1305??2010-08-25?02:06??modulator.m
?????文件????????1722??2014-11-24?10:01??MRC_scheme.m