A Symbol Synchronization Method for PSK Signal in Wireless Burst Communication

Abstract

The invention discloses a symbol synchronization method for a wireless burst communication PSK signal and relates to the field of mobile communication. The method solves the problems that a PSK signal symbol synchronization algorithm has longer convergence time and cannot be directly applied to burst communication with less data volume. The scheme of the invention comprises a clock primary phase acquisition algorithm and a clock phase tracking algorithm. According to the method, firstly, fast acquisition of a clock primary phase is realized, and then the acquired primary phase is injected into the clock phase tracking algorithm to realize high-precision tracking of the clock phase. The clock primary phase acquisition algorithm can select feedback type or forward type implementation according to the design requirements; and the clock phase tracking algorithm wholly adopts feedback type implementation. The symbol synchronization of the PSK signal is quickly realized at high precision without data assistance.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and more specifically, the invention relates to a fast symbol synchronization method for PSK digital phase modulation signals of wireless burst communication. Background technique [0002] Timing recovery of digital signals is a key link in digital communication, and obtaining timing synchronization information quickly and accurately is an important index to measure a system. For digital signals, at the symbol interval T S The sampling instant selected within is the timing phase, and the best timing phase is selected at the point where the eye diagram opens the largest within the symbol interval. At this time, the output sampling sample value is the best sampling point. Therefore, whether these optimal sampling points can be correctly output is very important to reduce the bit error rate and signal EVM. [0003] In the all-digital receiver, the transmitter clock and the local samp...

AI Technical Summary

Problems solved by technology

It should be noted that the Gardner algorithm has a long convergence time and cannot be directly applied to the burst communication mode with a small amount of data.

For communication with a small number of symbols, usually there is no convergence at the beginning of the effective reception of data, so it cannot be directly applied

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