Title :
Joint data and channel estimation for TDMA mobile channels
Author :
Lin, Jingdong ; Ling, Fuyun ; Proakis, John G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
One of the main problems in the proposed Northern American digital cellular system (IS-54) is the poor performance of the receiver for fast fading channels. The authors propose to use a novel joint data and channel estimation technique to improve performance. The basic idea of this method was described by N. Seshadri (1990) in the context of blind equalization. Simulation results indicate that this approach solves the problems of decision delay and divergence caused by error decision feedback in conventional maximum likelihood sequence estimation (MLSE). The specified IS-54 requirement of 19 dB at a BER of 3% and a speed of 100 km/h can be met with a margin of 8 dB. This result is 4.5 dB better than the conventional maximum likelihood receiver
Keywords :
cellular radio; digital radio systems; fading; maximum likelihood estimation; telecommunication channels; time division multiple access; IS-54; Northern American digital cellular system; TDMA mobile channels; blind equalization; computational complexity; decision delay; divergence; error decision feedback; fast fading channels; joint data/channel estimation; maximum likelihood sequence estimation; Channel estimation; Computational modeling; Decision feedback equalizers; Delay estimation; Fading; GSM; Maximum likelihood detection; Maximum likelihood estimation; Time division multiple access; Viterbi algorithm;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0841-7
DOI :
10.1109/PIMRC.1992.279929
