DocumentCode :
1044074
Title :
Constellation labeling maps for low error floors
Author :
Torrieri, Don ; Valenti, Matthew C.
Author_Institution :
US Army Res. Lab., Adelphi, MD
Volume :
7
Issue :
12
fYear :
2008
fDate :
12/1/2008 12:00:00 AM
Firstpage :
5401
Lastpage :
5407
Abstract :
A constellation labeling map is the assignment of a bit pattern to each symbol in a signal-set constellation. In a system with iterative decoding and demodulation, the error floor of the bit error rate is highly dependent on the labeling map. A simple class of labeling maps that significantly lower the error floors is presented. Examples show the applications of the proposed mapping to multiple phase-shift keying (MPSK), quadrature amplitude modulation (QAM), and continuous-phase frequency-shift keying (CPFSK). Simulation results indicate that the proposed labeling maps are comparable to or better than other labeling maps in providing a low error floor. A major advantage of the proposed labeling maps is that they are easily generated even when the alphabet size is large.
Keywords :
continuous phase modulation; demodulation; frequency shift keying; iterative decoding; phase shift keying; quadrature amplitude modulation; bit error rate; constellation labeling maps; continuous-phase frequency-shift keying; demodulation; iterative decoding; low error floors; multiple phase-shift keying; quadrature amplitude modulation; signal-set constellation; AWGN; Bit error rate; Computer errors; Constellation diagram; Demodulation; Iterative decoding; Labeling; Parity check codes; Quadrature amplitude modulation; Turbo codes; Constellation, labeling map, error floor, iterative; decoding, bit-interleaved coded modulation.;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/T-WC.2008.071276
Filename :
4723349
Link To Document :
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