Title :
Orthogonal Multicode Channelization Applied to Subsampling Digital UWB Receiver
Author :
Vanderperren, Yves ; Leus, Geert ; Dehaene, Wim
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ. Leuven, Heverlee
Abstract :
This paper assesses in AWGN and dense multipath environments several equalization alternatives for a digital pulsed UWB receiver sampling below Nyquist rate. A suboptimal but implementation efficient minimum mean-square error (MMSE) equalizer which reaches performances similar to the ideal MMSE equalizer is proposed. By making an efficient use of orthogonal codes, the UWB transceivers have flexible channelization means to accomodate time-varying data rate in the order of magnitude of 100 Mb/s with sampling rates below 1 GHz. The proposed multicode approach takes into account the peculiarities of pulsed UWB signals and avoids high peak-to-average amplitude ratios
Keywords :
AWGN channels; channel coding; equalisers; least mean squares methods; multipath channels; orthogonal codes; signal sampling; transceivers; ultra wideband communication; AWGN; MMSE equalizer; Nyquist rate; dense multipath environment; minimum mean-square error; orthogonal multicode channelization; subsampling digital UWB receiver; time-varying data rate; transceiver; AWGN; Equalizers; Frequency estimation; Matched filters; Peak to average power ratio; Pulse shaping methods; RAKE receivers; Sampling methods; Shape; Transceivers;
Conference_Titel :
Ultra-Wideband, The 2006 IEEE 2006 International Conference on
Conference_Location :
Waltham, MA
Print_ISBN :
1-4244-0101-1
Electronic_ISBN :
1-4244-0102-X
DOI :
10.1109/ICU.2006.281530
