Abstract
The performance of a suboptimal diversityreceiver in a frequency-nonselective slow Rayleighfading AWGN channel is analyzed. The channel isestimated by using pilot symbols that aretime-multiplexed with the data symbols in the transmitted signal. Theestimator is based on time-variant smoothing, and it canbe approximated by time-invariant smoothing andinterpolation. The paper includes both mean-square error analysis and bit error probabilityanalysis. The results are verified by some typicalperformance curves. It is shown that under suitableconditions (no aliasing in channel estimation), thesystem based on a time-invariant smoother and an idealinterpolator has the same performance as thetime-variant smoother and does not have any error-ratebottoming effect at large signal-to-noise ratios. Atsmall signal-to-noise ratios, the smoother must bematched to the Doppler power spectrum of the channel.The ideal interpolator can usually be approximated by alinear interpolator.
Original language | English |
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Pages (from-to) | 205 - 214 |
Number of pages | 10 |
Journal | International Journal of Wireless Information Networks |
Volume | 4 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1997 |
MoE publication type | A1 Journal article-refereed |