穿戴式超寬帶接收機(jī)誤碼率性能分析
[Abstract]:In order to study the influence of receiving and receiving antenna angle and decision mode on bit error rate (BER) of wearable ultra-wideband (UWB) RAKE receiver, digital sampling oscilloscope is used to obtain received signal in time domain, and CLEAN algorithm is used to deconvolution. Body surface-body surface and body surface-in vitro environment to obtain the human channel impulse response; The RAKE receiver with different structure and number of branches is used to receive the time-hopping signal with additive Gao Si noise in order to analyze its influence on BER. The simulation results show that the BER of the RAKE receiver with all branches is the lowest but the structure is complex, and the BER loss of the RAKE receiver with partial branches is 3 dB higher than that of the selective RAKE receiver under the same number of branches, but the complexity is lower. The research on different angles of receiving and transmitting antenna shows that the receiving and transmitting antenna should avoid vertical, otherwise the multi-path component caused by body surface reflection is increased, and the inter-symbol interference is easy to appear, thus increasing the BER.. In the case of repeated coding, the BER performance of soft decision is better than that of hard decision 0.2 脳 0.4 dB. The channel model and bit error rate analysis can provide a reference for the architecture design and performance research of wearable UWB transceivers.
【作者單位】: 桂林電子科技大學(xué)信息與通信學(xué)院;
【基金】:國家自然科學(xué)基金資助項目(61264001,61166004,61161003) 廣西自然科學(xué)基金資助項目(2013GXNSFAA019333) 桂林電子科技大學(xué)博士啟動基金項目(UF12001Y) 桂林電子科技大學(xué)研究生教育創(chuàng)新計劃資助項目(GDYCSZ201457)~~
【分類號】:TN851
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