RAKE Receiver with Carrier Coherent Demodulation for MultiPath Signals

doi:10.13190/jbupt.201003.30.fuhy

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (3): 30-33.doi: 10.13190/jbupt.201003.30.fuhy

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RAKE Receiver with Carrier Coherent Demodulation for MultiPath Signals

FU Hai-yang; JIA Xiang-dong; ZHENG Jian-guang; DAI Zhen-hua

(College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China)

Received:2009-09-17 Revised:2009-11-20 Online:2010-06-28 Published:2010-05-14

Abstract

Abstract:

Can not be accurately estimated，and existed in signal carriers of different paths, the Phase

difference leads to significant drop of power utilization rate of multi-path signals received by conventional

RAKE receiver (CLRAKE). A new RAKE receiver (CORAKE) that can separate multi-path signals in

carriers of different paths and implement carrier coherent demodulation is proposed. When received by

CORAKE, signal of each path is coherently demodulated. Phase difference between the local carrier and

carriers of corresponding received signals is zero, so that the defect of receiving due to the phase difference

among carries can be removed. Simulation shows that the CORAKE obtains better receiving signal

to noise ratio (SNR) gain.

Key words: multi-path signal, phase difference, RAKE receiver, coherent demodulation

FU Hai-yang; JIA Xiang-dong; ZHENG Jian-guang; DAI Zhen-hua.

RAKE Receiver with Carrier Coherent Demodulation for MultiPath Signals [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2010, 33(3): 30-33.

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RAKE Receiver with Carrier Coherent Demodulation for MultiPath Signals

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