Title :
A fractionally spaced MLSE receiver
Author :
Hamied, Khalid ; Stüber, Gordon L.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A new receiver structure is proposed that employs maximum likelihood sequence estimation (MLSE) on a sequence of T/2-spaced samples for systems having at most 100% excess bandwidth. A fixed analog filter is implemented in the proposed receiver that is matched to the transmitted pulse instead of the received pulse. A noise-whitening matched filter is also implemented in the receiver, having a fixed structure that is independent of the unknown channel. It is shown that the performance of the proposed receiver is identical to a conventional MLSE receiver and is insensitive to the sampler timing phase. The new receiver is suitable for rapidly time-variant channels
Keywords :
analogue circuits; estimation theory; filtering theory; matched filters; maximum likelihood estimation; receivers; signal sampling; time-varying channels; bandwidth; fixed analog filter; fractionally spaced MLSE receiver; maximum likelihood sequence estimation; noise-whitening matched filter; rapidly time-variant channels; receiver performance; receiver structure; sampler timing phase; transmitted pulse; Band pass filters; Bandwidth; Low pass filters; Matched filters; Maximum likelihood estimation; Noise shaping; Sampling methods; Signal to noise ratio; Timing; Viterbi algorithm;
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
DOI :
10.1109/ICC.1995.525129
