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An analysis of pilot symbol assisted modulation for Rayleigh fading channels [mobile radio]

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1 Author(s)
Cavers, J.K. ; Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada

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

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Vehicular Technology, IEEE Transactions on  (Volume:40 ,  Issue: 4 )