Multiuser interference mitigation in noncoherent UWB ranging via nonlinear filtering
EURASIP Journal on Wireless Communications and Networking
Multi-access Interference Cancellation Receiver for Time-Hopping Ultra Wideband Communication
Wireless Personal Communications: An International Journal
EURASIP Journal on Advances in Signal Processing
Pulse repetition and cyclic prefix: different transmitting strategies for impulse radio UWB systems
IEEE Transactions on Signal Processing
Adaptive block DFT-LMS signal detection in ultra-wideband communications
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Low-complexity multisampling multiuser detector for time-hopping UWB systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance characterization of UWB SSMA using orthogonal PPM-TH in dense multipath
PWC'06 Proceedings of the 11th IFIP TC6 international conference on Personal Wireless Communications
Wireless Communications & Mobile Computing
| Hi-index | 35.69 |
Impulse radio (IR) and especially time-hopping IR (TH-IR) systems have attracted considerable attention since their introduction in the context of ultra wide-band (UWB) systems in the early 1990s. Recently, with the U.S. Federal Communications Commission actions allowing for the wide-spread use of UWB radio systems, the interest in these systems has grown further. These systems promise to deliver high data rates in multiple access communication channels with very simple transmitter and receiver designs. The importance of multiuser detection for achieving high data rates with these systems has already been established in several studies. This paper studies several low-complexity multiuser detectors specifically designed for TH-IR radio systems. It is demonstrated that many multiuser detectors developed primarily for direct-sequence code division multiple access (DS-CDMA) systems can be used essentially without any change in TH-IR receivers. Further, several novel, low-complexity multiuser detectors that exploit the special signal structure used for transmission by TH-IR systems are developed. These novel detectors are analyzed both theoretically and via simulations. It is shown that a very simple iterative multiuser detector yields performance that is similar to that of a single-user system.