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Three schemes of multibranch switch‐and‐examine combining (MSEC) with switch statistics different from the signal‐to‐noise ratio used in the traditional MSEC are analyzed. For each diversity branch, with its fading factor a and low‐passed received signal r, the switch statistics for the three MSEC schemes considered in the paper are | r | , | ar | , and a linear combination of a and | r | , respectively...
A new spatial diversity with sequential maximal ratio combining (S-MRC) is proposed and analyzed. In the S-MRC system, the diversity branches are added for combining one-by-one in a sequential manner, and a truncated sequential probability ratio test (TSPRT) is used for signal detection. By sequentially adding individual branches for combining, the power consumption from directly using all available...
The average symbol error probability (SEP) of M-ary orthogonal signaling with a large M is evaluated using new upper bounds. Based on the relation of the Gaussian Q-function and its square, new upper bounds on the SEP on the Rayleigh fading channels are developed, where single-integral forms are derived. Numerical results are presented to illustrate the value of the upper bound and validate the bound-based...
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