Title :
Downlink beamforming for frequency-duplex systems in frequency-selective fading
Author :
Czylwik, Andreas ; Matsumoto, Tadashi
Author_Institution :
T-Nova Deutsche Telekom Innovationsgesellschaft mbH, Darmstadt, Germany
Abstract :
Downlink beamforming is analyzed for broadband frequency-duplex systems where frequency-selective fading dominates. In order to compare different beamforming strategies, system level simulations are carried out. It is assumed that at the receiver of the mobile station, path diversity can be exploited. The performance gain from maximal ratio combining of the signal components is evaluated with a new approach that combines system level simulations with an analytical calculation of the probability density function of the signal-to-interference power ratio (SIR) at the output of the combiner
Keywords :
array signal processing; broadband networks; cellular radio; cochannel interference; digital simulation; direction-of-arrival estimation; diversity reception; fading channels; interference suppression; probability; radio links; radiowave propagation; space division multiple access; SDMA; SIR; beamforming algorithm; broadband frequency-duplex systems; cellular radio system; combiner output; downlink beamforming; frequency-duplex systems; frequency-selective fading; maximal ratio combining; mobile station receiver; path diversity; performance gain; probability density function; propagation model; signal components; signal-to-interference power ratio; smart antennas; space division multiple access; system level simulations; Analytical models; Array signal processing; Diversity reception; Downlink; Fading; Frequency; Performance analysis; Performance gain; Probability density function; Signal analysis;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851214
