Title :
Enhanced MDIR receiver for space-time dispersive channels
Author :
Vidal, Josep ; Cabrera, Margarita ; De Dios, Adrian Agustín ; Lagunas, Miguel Angel
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
A particular property of the matched desired impulse response receiver is introduced, namely, the fact that full exploitation of the diversity is obtained with multiple beamformers when the channel is spatially and timely dispersive. This particularity makes the receiver specially suitable for mobile and underwater communications. The new structure provides better performance than conventional and weighted VRAKE receivers, and a diversity gain with no need for additional radio frequency equipment. The baseband hardware needed for this new receiver may be obtained through reconfigurability of the RAKE architectures available at the base station. The proposed receiver is tested through simulations assuming UTRA frequency-division-duplexing mode.
Keywords :
3G mobile communication; array signal processing; dispersive channels; diversity reception; error statistics; filtering theory; matched filters; multipath channels; radio receivers; radiofrequency interference; transient response; 3G mobile communication; BER; MDIR receiver; RAKE architecture reconfigurability; UTRA; adaptive antennas; base station; baseband hardware; diversity gain; frequency-division-duplexing; matched desired impulse response receiver; matched filtering; mobile communications; multipath channels; multiple beamformers; noise-plus-interference matrix inversion; space-time dispersive channels; third-generation mobile communication systems; underwater communications; weighted VRAKE receivers; Adaptive arrays; Baseband; Bit error rate; Dispersion; Diversity methods; Hardware; RAKE receivers; Radio frequency; Underwater communication; Wireless communication;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2002.806369