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| THE DETECTION OF UNIQUE WORD AT LOWER SNR |
| Zhang Ju①; Xiang Jingcheng①; Zhu Zhongliang② |
| ①College of E.E., UEST of China Chengdu 610054 China;②Southwest Inst. of Electron. & Telecomm. Techn., Chengdu 610031 China |
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Abstract This paper describes the principles of Unique Word(UW) detection and the design methods for a UW-detector at lower SNR. An engineering solution for a general purpose UW-detector based on maximum likelihood criteria is proposed. The simulation results show a 3-4dB improvement over the often employed hard-decision/threshold detection when the length of UW is 16 and the SNR is low. The developed UW-detectors have been used in auther s recent communication systems.
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Received: 20 March 2000
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2001, Vol. 23 
