Title :
Performance of adaptive equalization and soft-decision decoding techniques over TDMA digital cellular radio channels
Author_Institution :
GTE Lab. Inc., Waltham, MA, USA
Abstract :
The performances of two equalization and soft-decision decoding techniques for transmission over the proposed Telecommunications Industry Association North American TDMA digital cellular radio channels are studied. Simulation results indicate that the maximum likelihood sequence estimation (MLSE) equalizer´s performance is slightly better than that of the decision feedback equalizer (DFE). Both equalizer´s are about 3-4 dB away from optimal performance at vehicle speeds of 60 mph and are 6-7 dB lower than called for in the IS-54 specification. The results also show that for both techniques, soft decisions provide a decoded bit error rate (BER) of 1% with 2 dB less power than that required for hard decisions
Keywords :
cellular radio; decoding; digital radio systems; equalisers; feedback; maximum likelihood estimation; telecommunication channels; time division multiple access; BER; DFE; MLSE equalizer; North America; TDMA; Telecommunications Industry Association; adaptive equalization; decision feedback equalizer; decoded bit error rate; digital cellular radio channels; maximum likelihood sequence estimation; soft-decision decoding; vehicle speeds; Adaptive equalizers; Bidirectional control; Communication industry; Convolutional codes; Decision feedback equalizers; Land mobile radio cellular systems; Maximum likelihood decoding; Maximum likelihood estimation; Time division multiple access; Vehicles;
Conference_Titel :
Global Telecommunications Conference, 1992. Conference Record., GLOBECOM '92. Communication for Global Users., IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0608-2
DOI :
10.1109/GLOCOM.1992.276388
