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

• Published in: IEEE transactions on wireless communications Vol. 9; no. 11; pp. 3365 - 3379
• Main Authors: Rabbachin, A, Quek, T Q S, Pinto, P C, Oppermann, I, Win, M Z
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; autocorrelation receiver; Carrier frequencies; Channels; Codes; Communication; Design engineering; energy detection; Exact sciences and technology; Fading; Information, signal and communications theory; Interference; Modulation, demodulation; Narrowband; narrowband interference; Niobium; Noise; Poisson point process; Pulse position modulation; Radiocommunications; Receivers; Signal and communications theory; Switching and signalling; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); transmitted reference; Transmitters. Receivers; Ultra-wide bandwidth (UWB) communications; Wideband communications; Wireless communication; Performance evaluation; Bit error rate; Information rate; Pulse position modulation; Poisson process; Multipath channels; autocorrelation receiver; Binary modulation; transmitted reference; Electric power consumption; Pulse amplitude modulation; Ultra-wide bandwidth (UWB) communications; Fading channels; Narrow band noise; Receiver; Signalling; Narrow band; Information transmission; Ultra wide band; Carrier frequency; Poisson point process; Point process; energy detection; narrowband interference; Autocorrelation
• ISSN: 1536-1276; 1558-2248
• DOI: 10.1109/TWC.2010.091510.080203

There has been an emerging interest in non-coherent ultra-wide bandwidth (UWB) communications, particularly for low-data rate applications because of its low-complexity and low-power consumption. However, the presence of narrowband (NB) interference severely degrades the communication performance since the energy of the interfering signals is also collected by the receiver. In this paper, we compare the performance of two non-coherent UWB receiver structures - the autocorrelation receiver (AcR) and the energy detection receiver (EDR) - in terms of the bit error probability (BEP). The AcR is based on the transmitted reference signaling with binary pulse amplitude modulation, while the EDR is based on the binary pulse position modulation. We analyze the BEPs for these two non-coherent systems in a multipath fading channel, both in the absence and presence of NB interference. We consider two cases: a) single NB interferer, where the interfering node is located at a fixed distance from the receiver, and b) multiple NB interferers, where the interfering nodes with the same carrier frequency are scattered according to a spatial Poisson process. Our framework is simple enough to enable a tractable analysis and provide insights that are of value in the design of practical UWB systems subject to interference.