Title :
Sub-optimal turbo-detection for coded 8-PSK signals over ISI channels with application to EDGE advanced mobile system
Author :
Berthet, A. ; Visoz, R. ; Tortelier, P.
Author_Institution :
France Telecom R&D, Issy-les-Moulineaux, France
Abstract :
A turbo-detector concept assuring a favorable tradeoff between performance and complexity is investigated for the novel radio access scheme at enhanced data rates for GSM evolution (EDGE). The high level modulation employed in EDGE (8-PSK) precludes MAP or MLSE turbo-detection, and consequently, computationally efficient sub-optimum solutions have to be considered. A turbo-detector based on a generic SISO delayed decision-feedback sequence estimator (DDFSE) is shown to be a very promising candidate, so long as we couple it with a discrete-time allpass pre-filter turning channel impulse response into minimum phase
Keywords :
all-pass filters; cellular radio; decoding; equalisers; feedback; filtering theory; intersymbol interference; maximum likelihood sequence estimation; modulation coding; phase shift keying; radio access networks; signal detection; transient response; turbo codes; 8-PSK; BER; EDGE; FER; GSM; MLSE; SISO decoder algorithm; SISO delayed decision-feedback sequence estimator; SISO equalizer algorithms; UMTS; Universal Mobile Telecommunication System; complexity; computationally efficient sub-optimum solutions; data rates; discrete-time allpass pre-filter; high level modulation; minimum phase channel impulse response; performance; radio access interface; sub-optimal turbo-detection; turbo-detector; wideband coded-division multiple access; Convolutional codes; Decoding; Delay estimation; Detectors; Equalizers; Filters; GSM; Intersymbol interference; Maximum likelihood estimation; Phase modulation;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-6463-5
DOI :
10.1109/PIMRC.2000.881409
