H. K. Lau

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The paper proposes a novel pilot-symbol-aided (PSA) technique for fading compensation of digital signals in the mobile environments. In a PSA system, the data sequence at the transmitter is divided into frames of data. A pilot symbol from a known pseudoradom-symbol sequence is inserted periodically into a frame of data symbol for transmission. In a(More)
The paper studies the effects of N-branch postdetection selection diversity reception, where N = 1, 2, 3 or 4, incorporated with fading compensation on a digital satellite mobile system. The digital satellite mobile system transmits a pilot-symbol-aided 16-ary quadrature-amplitude modulated (PSA-16QAM) signal over the Rician channels. A selection method(More)
– The paper studies the bit-error-rate (BER) performance of a pilot-symbol-aided (PSA) 16QAM system with an N-branch postdetection selection combining diversity reception over multipath fading channels. Both pilot symbols and data symbols are used to compensate for the fading distortion. Computer simulation results have shown that the use of diversity(More)
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