Title :
An analysis of pilot symbol assisted modulation for Rayleigh fading channels [mobile radio]
Author :
Cavers, James K.
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada
fDate :
11/1/1991 12:00:00 AM
Abstract :
The author presents pilot-symbol-assisted modulation (PSAM) on a solid analytical basis, a feature missing from previous work. Closed-form expressions are presented for the bit error rate (BER) in binary-phase-shift-keying (BPSK) and in quadrature-phase-shift-keying (QPSK), for a tight upper bound on the symbol error rate in 16 quadrature-amplitude-modulation (16-QAM), and for the optimized receiver coefficients. The error rates obtained are lower than for differential detection for any combination of signal-to-noise ratio (SNR) and Doppler spread, and the performance is within 1 dB of a perfect reference system under slow-fading conditions and within 3 dB when the Doppler spread is 5% of the symbol rate
Keywords :
amplitude modulation; digital radio systems; fading; mobile radio systems; phase shift keying; telecommunication channels; 16-QAM; BER; BPSK; Doppler spread; QPSK; Rayleigh fading channels; binary-phase-shift-keying; bit error rate; digital mobile radio; optimized receiver coefficients; pilot symbol assisted modulation; quadrature-amplitude-modulation; quadrature-phase-shift-keying; signal-to-noise ratio; symbol error rate; Binary phase shift keying; Bit error rate; Fading; Land mobile radio; Mobile communication; Peak to average power ratio; Pulse modulation; Pulse shaping methods; Rayleigh channels; Shape;
Journal_Title :
Vehicular Technology, IEEE Transactions on
