SYNCHRONISATION METHOD AND DEVICE FOR TRANSMIT AND RECEIVE SYMBOLS OF ALL-DIGITAL RECEIVER

摘要

A synchronisation method and device for transmit and receive symbols of an all-digital receiver. The method comprises the steps of: after receiving a sampling signal sent by a baseband processing chip, the clock signal of which is provided by a second clock source, a digital signal processor (DSP), the clock signal of which is provided by a first clock source, measuring a phase shift between a local sampling symbol and an air interface symbol, and acquiring the phase shift amount; according to the phase shift amount, adjusting a sampling opportunity for the sampling of a digital-analogue/analogue-digital converter; and when the sampling opportunity for the sampling of the digital-analogue/analogue-digital converter has been adjusted, adjusting an interface clock for data transmitting and receiving of the DSP so as to enable the data transmitting and receiving of the DSP to be synchronised with the sampling.

主权项

1. A method for transmitting and receiving symbols synchronously in an all-digital receiver, comprising:
measuring a phase offset between a local sampling symbol and an air interface symbol to obtain the phase offset, when a sampling signal transmitted by a baseband processing chip with a clock signal provided by a second clock source is received by a digital signal processer (DSP) with a clock signal provided by a first clock source; adjusting a sampling timing of a digital to analogue/analogue to digital converter based on the phase offset; and adjusting an interface clock for data transmission and reception of the DSP when the sampling timing of the digital to analogue/analogue to digital converter is adjusted, to synchronize the data transmission and reception of the DSP with the sampling.