Title :
16-state nonlinear equalizer for IS-54 digital cellular channels
Author :
Chou, W.P. ; McLane, P.J.
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
A simple receiver that consists of a Nyquist filter matched to the transmitter filter followed by a 16-state sequence estimator has been considered for a two-beam, frequency-selective fading channel with inter-beam delay up to one symbol. 16-state sequence estimator compensates for the two-beam fading model that represents the channel between transmitter and receiver. Performance has been evaluated for perfect channel state information regarding fading and was found to be much superior to using a linear equalizer rather than a 16-state sequence estimator. The results compare favorably with earlier results that did not involve Nyquist pulse shaping. North American Digital Cellular fading parameters have been used in the performance analysis. Results are presented for both root-raised-cosine filtered π/4-DQPSK (differential quadrature phase shift keying) and QPSK modulation formats
Keywords :
cellular radio; differential phase shift keying; digital radio; equalisers; estimation theory; fading; matched filters; quadrature phase shift keying; 16-state sequence estimator; IS-54 digital cellular channels; Nyquist filter; QPSK; differential quadrature phase shift keying; frequency-selective fading channel; nonlinear equalizer; performance analysis; receiver; Channel state information; Delay estimation; Equalizers; Frequency estimation; Frequency-selective fading channels; Matched filters; Performance analysis; Pulse shaping methods; State estimation; Transmitters;
Conference_Titel :
Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0971-5
DOI :
10.1109/PACRIM.1993.407213
