Title :
Unequal error protection using multiple block coded modulation
Author :
Li, Huan-Beng ; Wakana, Hiromitsu ; Tanaka, Masato
Author_Institution :
Commun. Res. Lab., Ibaraki, Japan
Abstract :
We use multiple block coded modulation (MBCM) combined with an unconventional (UC) partition and nonuniformly spaced signal points to provide unequal error protection (UEP). MBCM greatly increases the minimum squared Euclidean distance, which dominates the bit error rate (BER) at large signal-to-noise ratios (SNRs). In comparison, UC partition reduces the number of nearest neighbor codewords, which significantly affects the BER at small SNRs. The nonuniformly spaced signal points are used to adjust the performance tradeoff
Keywords :
error statistics; modulation coding; noise; BER; SNR; bit error rate; minimum squared Euclidean distance; multiple block coded modulation; nearest neighbor codewords; nonuniformly spaced signal points; signal-to-nose ratio; unconventional partition; unequal error protection; Bit error rate; Decoding; Error correction codes; Euclidean distance; Modulation coding; Parity check codes; Protection; Signal to noise ratio; Virtual colonoscopy; Viterbi algorithm;
Conference_Titel :
Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7010-4
DOI :
10.1109/ICII.2001.983684
