Q/sup 2/DPSK in the satellite mobile channel with ISI and CSI

The authors analyze the performance of quadrature-quadrature differential phase shift keying (Q/sup 2/DPSK) in the satellite mobile channel. The expression for the bit error probability takes into account both intersymbol and cross-symbol interference (ISI and CSI). Numerical results are presented for three different pulse pairs. It is shown that Q/sup 2/DPSK with 4 symbols outperforms DPSK with 8 symbols. They conclude that Q/sup 2/DPSK is both power and bandwidth efficient for the satellite mobile channel which includes as special cases the Gaussian and Rayleigh channels.<
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