Performance and parameter optimization of UWB RAKE reception with interchip interference

Abstract

Abstract-In this paper, performance and parameter optimization of RAKE reception for time-hopping Ultra Wideband (TH-UWB) systems is investigated when interchip interference (ICI) is taken into consideration. For a TH-UWB system, ICI is closely related to the relationship between the number of chips in a frame (N c ), and the period of the TH code (N f ). In a fixed datarate case, larger N f implies higher transmitted symbol signal-tonoise ratio (SNR) and larger ICI in RAKE fingers. So there is a tradeoff between N c and N f to optimize the RAKE performance. In this paper, two models are suggested to describe the ICI, and this tradeoff is investigated in the single user case based on the traditional Gaussian approximation method and other flexible methods. Given the lack of explicit knowledge of the relationship among N f , Nc and the interference, a rule of thumb is proposed to configure N f and Nc.

Impact of Self-Interference on the Performance of Joint Partial RAKE Receiver and Adaptive Modulation

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