Constellation mappings for two-dimensional non-uniform signaling

Author

Takahara, Glen ; Alajaji, Fady ; Kuai, Hongyan ; Beaulieu, Norman C.

Author_Institution

Dept. of Math. & Stat., Queen´´s Univ., Kingston, Ont., Canada

fYear

2000

fDate

2000

Firstpage

165

Abstract

We investigate the design of constellation mappings for the transmission of nonuniform memoryless sources over AWGN channels via M-ary modulation schemes. We show that constellation mappings which minimize the average symbol energy and, given this, maximize the decoding probability of the most likely signals, can yield SER and BER performance that is better than Gray encoding maps. We also find that for highly non-uniform sources, 16-QAM can perform better than 2-QAM, in terms of both throughput and BER

Keywords

AWGN channels; decoding; error statistics; memoryless systems; quadrature amplitude modulation; telecommunication signalling; 16-QAM; 2-QAM; 2D nonuniform signaling; AWGN channels; BER performance; Gray encoding maps; M-ary modulation; MAP decoding; SER performance; average symbol energy minimization; constellation mappings; decoding probability; nonuniform memoryless sources; nonuniform sources; source transmission; throughput; two-dimensional nonuniform signaling; AWGN channels; Bit error rate; Constellation diagram; Decoding; Error analysis; Mathematics; Redundancy; Signal mapping; Statistics; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2000. Proceedings. IEEE International Symposium on

Conference_Location

Sorrento

Print_ISBN

0-7803-5857-0

Type

conf

DOI

10.1109/ISIT.2000.866460

Filename

866460