Random sign repetition time-hopping UWB with multiuser detection
EURASIP Journal on Wireless Communications and Networking
Multi-User Ultra-Wide Band Communication System Based on Modified Gegenbauer and Hermite Functions
Wireless Personal Communications: An International Journal
Multi-access Interference Cancellation Receiver for Time-Hopping Ultra Wideband Communication
Wireless Personal Communications: An International Journal
Multiuser channel estimation for ultra-wideband systems using up to the second-order statistics
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Applied Signal Processing
Optimization of linear precoded OFDM for high-data-rate UWB systems
EURASIP Journal on Wireless Communications and Networking - Multicarrier Systems
EURASIP Journal on Advances in Signal Processing
Hybrid intelligence techniques for multiuser detection in DS-CDMA UWB systems
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
IEEE Transactions on Wireless Communications
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Intelligent wireless home network based on cooperative DS-UWB system
UIC'06 Proceedings of the Third international conference on Ubiquitous Intelligence and Computing
Multi-channel estimation in multiple antenna MB-OFDM UWB system for home entertainment network
ICCSA'06 Proceedings of the 2006 international conference on Computational Science and Its Applications - Volume Part V
Wireless Communications & Mobile Computing
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We demonstrate the effectiveness of multiuser detection for an ultra-wideband (UWB) pulse based direct sequence spread spectrum system using code division multiple access. Extensive simulations were run using channel soundings of the 2-8 GHz band collected in a residential setting and characterized by a high level of multipath fragmentation. We show that the adaptive minimum mean square error (MMSE) multiuser detection (MUD) receivers are able to gather multipath energy and reject intersymbol and interchip interference for these channels to a much greater extent than RAKE receivers with 4 and 8 arms. We also demonstrate the adaptive MMSE is able to reject a narrowband IEEE 802.11a OFDM interferer, even for signal-to-interference ratio as severe as -30 dB. We show the adaptive MMSE exhibits only a 6 dB penalty relative to the single user case for the heavy multi-access interference (number of asynchronous users equal to spreading code length). The practical RAKE receivers were incapable of effectively rejecting either the strong narrowband interference or the heavily loaded wideband interference. Even more moderate levels of interference caused significant degradation in the performance of the practical RAKE receivers.