Abstract
Pilot symbol assisted modulation (PSAM) is amethod to reduce the effects of fading in mobilecommunications by periodically inserting knowing symbolsin the data stream. The receiver uses the pilot symbols to estimate channel state information. In orderto do this, the pilot symbols must first be located inthe noisy received sequence. This paper investigates theperformance of a class of PSAMs frame synchronizers which have the form of a quadratic correlationfilter and threshold test. Computer simulations are usedto show that these synchronizers can be designed to havea robust performance over a large range of Doppler spreads and SNR, to achieve anarbitrarily high probability of correct acquisition, andto maintain low computational complexity.
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