期刊
IEEE COMMUNICATIONS LETTERS
卷 14, 期 10, 页码 924-926出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2010.090710.100934
关键词
Energy detection; slow fading; cognitive radio; UWB; Wald distribution
资金
- Wolfson Microelectronics Scholarship
- Scottish Funding Council
- Heriot-Watt University
Energy detection (ED) has been widely used for detecting unknown deterministic signals in many wireless communication applications, e.g., cognitive radio, and ultra-wideband (UWB). However, the performance analysis of ED over slow fading channels is cumbersome, because it is difficult to derive closed-form expressions for the average probability of detection involving the generalised Marcum Q-function and the log-normal distribution. In this letter, we derive an approximation of the average probability of detection over a slow fading channel by replacing the log-normal distribution with a Wald distribution. In addition, we analyze the detection performance of the ED using a square-law combining scheme over multiple independent and identically distributed slow fading channels.
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