Title :
Performance of a block coded modulation scheme with equalization and antenna diversity
Author :
Koipillai, R.D. ; Chennakeshu, S.
Author_Institution :
Adv. Dev. & Res. Group, Ericsson Inc., Research Triangle Park, NC, USA
Abstract :
One of the main issues in evaluating the applicability of block coded modulation (BCM) for cellular communications is equalization, which is necessitated by delay spread caused by the channel. In this paper, we present a combined equalization and decoding (CED) algorithm for BCM schemes. The equalization is done via ISI cancellation using past decoder decisions. Using performance simulations, it is shown that CED algorithms are insensitive to the different delay spread conditions. Using pre-detection antenna selection diversity with the CED algorithm, performance improvements of 4-5 dB are demonstrated at a BER level of 1.0 E-03
Keywords :
Rayleigh channels; block codes; cellular radio; decoding; delay circuits; diversity reception; equalisers; estimation theory; fading; interference suppression; intersymbol interference; land mobile radio; mobile antennas; modulation coding; radiofrequency interference; BER level; CED algorithms; ISI cancellation; MLSE; Rayleigh fading channels; antenna diversity; block coded modulation scheme; cellular communications; decoding algorithm; delay spread; equalization; past decoder decisions; performance; pre-detection antenna selection diversity; Bit error rate; Decision feedback equalizers; Decoding; Delay; Diversity reception; Fading; Information rates; Modulation coding; Parity check codes; Performance gain;
Conference_Titel :
Vehicular Technology Conference, 1995 IEEE 45th
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-2742-X
DOI :
10.1109/VETEC.1995.504819
