An Energy Efficient Transmitted-Reference Scheme for Ultra Wideband Communications
AuthorsThomas Zasowski, Frank Althaus, and Armin Wittneben
Reference2004 International Workshop on Ultra Wideband Systems (IWUWBS) Joint with Conference on Ultra Wideband Systems and Technologies (UWBST), Kyoto, Japan, May 2004
AbstractTransmitted-Reference (TR) receivers represent a low complexity alternative to RAKE receivers, which are widely used in Ultra Wideband (UWB) communications. Known TR schemes are not very energy efficient since two pulses represent one bit value. Therefore, we present a TR Pulse Interval Amplitude Modulation (PIAM) scheme which reduces the required energy per bit in the receiver and a low complexity receiver structure for TR PIAM. We investigate the performance of TR 4PIAM analytically and by means of simulation and show that higher modulation alphabets can be adapted easily. Moreover, we show that there exists an optimal correlation length for transmission over multipath channels.
KeywordsUWB, Transmitted Reference
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Copyright Notice: © 2004 T. Zasowski, F. Althaus, and A. Wittneben.
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