Timing synchronization apparatus and method for multi-carrier modulation signals
First Claim
1. A timing synchronization apparatus for multi-carrier modulation signals, comprising:
- a predicting unit configured to denoise delay of symbols received before a currently received symbol, and to predict a predicted delay of the one of the currently received symbol and a symbol received after the currently received symbol according to a denoised symbol delay and a sampling clock frequency offset;
a timing synchronization unit configured to perform timing synchronization according to a predicted value of the predicted delay of one of the currently received symbol and the symbol received after the currently received symbol;
wherein the timing synchronization unit comprises;
a remaining symbol delay correcting unit configured to correct remaining symbol delay according to the one of the predicted value of the predicted delay of the currently received symbol and the symbol received after the currently received symbol; and
wherein the predicting unit obtains delay of the symbols received before the currently received symbol before the remaining symbol delay correcting unit corrects the remaining symbol delay.
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Abstract
Embodiments of the present invention provide a timing synchronization apparatus and method for multi-carrier modulation signals. Wherein the apparatus includes: a predicting unit configured to denoise delay of symbols received before a currently received symbol, and to predict delay of the currently received symbol or of a symbol received after the currently received symbol according to the denoised symbol delay and a sampling clock frequency offset; and a timing synchronization unit configured to perform timing synchronization according to a predicted value of the delay of the currently received symbol or of the symbol received after the currently received symbol. With the apparatus and method, a signal to noise ratio of multi-carrier modulation signals may be effectively improved, and an effect of a timing error on a communication system may be lowered, thereby improving performance of the communication system.
11 Citations
8 Claims
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1. A timing synchronization apparatus for multi-carrier modulation signals, comprising:
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a predicting unit configured to denoise delay of symbols received before a currently received symbol, and to predict a predicted delay of the one of the currently received symbol and a symbol received after the currently received symbol according to a denoised symbol delay and a sampling clock frequency offset; a timing synchronization unit configured to perform timing synchronization according to a predicted value of the predicted delay of one of the currently received symbol and the symbol received after the currently received symbol; wherein the timing synchronization unit comprises; a remaining symbol delay correcting unit configured to correct remaining symbol delay according to the one of the predicted value of the predicted delay of the currently received symbol and the symbol received after the currently received symbol; and wherein the predicting unit obtains delay of the symbols received before the currently received symbol before the remaining symbol delay correcting unit corrects the remaining symbol delay. - View Dependent Claims (2, 3, 4, 5)
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6. A timing synchronization method for multi-carrier modulation signals, comprising:
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denoising delay of symbols received before a currently received symbol, and predicting delay of one of the currently received symbol and a symbol received after the currently received symbol according to a denoised symbol delay and a sampling clock frequency offset; performing timing synchronization according to a predicted value of predicted delay of one of the currently received symbol and of the symbol received after the currently received symbol;
wherein the performing timing synchronization according to a predicted value of the delay of the currently received symbol or of the symbol received after the currently received symbol comprises;
correcting remaining symbol delay according to the predicted value of the one of the predicted delay of the currently received symbol and the symbol received after the currently received symbol; andwherein delay of the symbols received before the currently received symbol is obtained before correcting the remaining symbol delay. - View Dependent Claims (7, 8)
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Specification