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篇目详细内容 |
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【篇名】 |
A novel auto-reference ultra-wideband receiver scheme |
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【刊名】 |
Frontiers of Electrical and Electronic Engineering in China |
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【刊名缩写】 |
Front. Electr. Electron. Eng. China |
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【ISSN】 |
1673-3460 |
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【EISSN】 |
1673-3584 |
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【DOI】 |
10.1007/s11460-007-0057-0 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2007 |
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【卷期】 |
2
卷3期 |
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【页码】 |
307-311
页,共
5
页 |
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【作者】 |
LIAO Xuewen;
ZHU Shihua;
ZENG Erlin;
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【关键词】 |
ultra-wideband (UWB); transmitted-reference (TR); auto-reference (AR); generalized likelihood ratio testing (GLRT) |
【摘要】 |
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A new auto-reference (AR) transmit-receive scheme and a corresponding group decision algorithm on the generalized likelihood ratio testing (GLRT) principle is proposed in this paper to overcome the drawbacks of the power inefficiency and the high noise vulnerability in transmitted-reference (TR) ultra-wideband (UWB) systems. A partly overlapped detection window structure is introduced in which the decided data frames are regarded as the reference signal so that energy and time resources in the reference frame are saved and full-rate data transmission is achieved. Differential coding was utilized to solve the error propagation problem introduced by the overlapped detection windows. The group decision algorithm on the GLRT principle was utilized to estimate the correlation template through all data frames in detection windows and could offer better noise suppression. Simulation results reveal that the AR scheme with its decision algorithm outperforms the conventional and other modified TR schemes in generalized signal-to-noise ratio (SNR). |
