Title :
Hard-decision in COVQ over waveform channels
Author :
Perez-Córdoba, José L. ; Rubio, Antonio J. ; López-Soler, Juan M. ; Benítez, M. Carmen
Author_Institution :
Dept. de Electron. y Tecnologia de Computadores, Granada Univ., Spain
Abstract :
A channel optimized vector quantizer (COVQ) is studied for the case of transmission over waveform channels. In this work, a number of modulation schemes with multidimensional signal constellations are considered, specifically, results on the binary signalling. M-ary phase-shift keying (MPSK) and M-ary quadrature amplitude modulation (MQAM) performance using COVQ with hard-decision decoding, is optimized for additive white Gaussian noise (AWGN) and flat-fading Rayleigh channel. In addition, when a flat-fading Rayleigh channel is assumed, diversity techniques are used and evaluated to improve the performance of the system
Keywords :
AWGN channels; Rayleigh channels; combined source-channel coding; decoding; diversity reception; multidimensional signal processing; phase shift keying; quadrature amplitude modulation; telecommunication signalling; vector quantisation; AWGN; COVQ; M-ary phase-shift keying; M-ary quadrature amplitude modulation; MPSK; MQAM; additive white Gaussian noise; binary signalling; channel optimized vector quantizer; diversity techniques; flat-fading Rayleigh channel; hard-decision decoding; multidimensional signal constellations; performance; waveform channel transmission; Additive white noise; Constellation diagram; Decoding; Delay; Design optimization; Fading; Multidimensional systems; Quadrature amplitude modulation; Rayleigh channels; Source coding;
Conference_Titel :
Data Compression Conference, 2000. Proceedings. DCC 2000
Conference_Location :
Snowbird, UT
Print_ISBN :
0-7695-0592-9
DOI :
10.1109/DCC.2000.838145
