Non-Coherent UWB Communication in the Presence of Multiple Narrowband Interferers

Over the last few years there has been an emerging interest in non-coherent ultrawideband (UWB) communication, particularly as a technology for low-data rate applications because of its low-complexity and low-power consumption. However, the presence of narrowband interference (NBI) severely degrades the communication performance since the energy of the NBI signals is also collected. In this paper, we compare the performance of two non-coherent UWB receiver structures ¿ the autocorrelation receiver (AcR) and the energy detection (ED) receiver ¿ in terms of the bit error probability (BEP). The AcR is based on the transmitted reference signaling with binary pulse amplitude modulation, while the ED receiver is based on the binary pulse position modulation. We analyze the BEPs for the two non- coherent systems in a multipath fading channel, both in the absence and presence of NBI. We consider two NBI cases: a) single NBI, where the interfering node is located at a fixed distance from the receiver, and b) multiple NBI, where the interfering nodes with the same carrier frequency are scattered according to a spatial Poisson process. Our framework is simple enough to allow a tractable analysis and provide insights that can be of value in the design of practical UWB systems subject to interference. In particular, we show that the ED receiver is more robust to NBI than the AcR, we quantify how the optimal integration time of the receivers depends on the different system parameters, and we establish a clear relationship between the effect of the aggregate NBI and the interferer parameters such as density and power.

RABBACHIN Alberto;  QUEK Tony;  PINTO Pedro;  OPPERMANN Ian;  WIN Moe; 

2010-11-23

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

JRC56235

1536-1276,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC56235,   

10.1109/TWC.2010.091510.080203,