Title :
Delay tuning based transmit diversity scheme for TH-PPM UWB: performance with RAKE reception and comparison with multi RX schemes
Author :
Niranjayan, S. ; Nallanathan, A. ; Kannan, B.
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
A delay tuning based transmit diversity scheme is proposed and its performance is compared with the performance of conventional RAKE receivers and multiple receiver antenna (multi RX) schemes. The performance improvement by using RAKE reception with the delay tuning based scheme is also discussed. In the proposed scheme, the transmission of each transmitting antenna is delay-adjusted in order to combine the strongest paths of the antennas coherently in space. This approach yields significant increase in performance in multiuser UWB environments, and reduces the complexity of the receivers.
Keywords :
computational complexity; delays; diversity reception; fading channels; indoor radio; multipath channels; multiuser channels; pulse position modulation; radio receivers; receiving antennas; spread spectrum communication; transmitting antennas; RAKE reception; TH-PPM UWB communication; complexity; delay adjustment; delay tuning based transmit diversity; indoor wireless communications; multipath fading; multiple receiver antenna schemes; multiuser UWB environments; time hopping pulse position modulation ultra wideband communication; time hopping spread spectrum multiple access; transmitting antenna; Delay; Diversity reception; Fading; Multipath channels; Multiple access interference; Pulse modulation; RAKE receivers; Receiving antennas; Space technology; Transmitting antennas;
Conference_Titel :
Ultra Wideband Systems, 2004. Joint with Conference on Ultrawideband Systems and Technologies. Joint UWBST & IWUWBS. 2004 International Workshop on
Print_ISBN :
0-7803-8373-7
DOI :
10.1109/UWBST.2004.1320992
