DocumentCode :
3141602
Title :
Adaptive MIMO transmission in a realistic multicell scenario
Author :
Thiele, Lars ; Jungnickel, Volker
Author_Institution :
Fraunhofer Inst. for Telecommun., Berlin
fYear :
2008
fDate :
22-24 Jan. 2008
Firstpage :
531
Lastpage :
534
Abstract :
Cochannel interference in multicellular radio systems is a challenge when full area coverage needs to be ensured. On the physical layer there exist several concepts to combat the interference. However, their performance in an orthogonal frequency division multiple access (OFDMA) system has not been thoroughly investigated yet. One promising technique is the employment of multiple antennas at the terminal side for the purpose of interference rejection. To increase the cell capacity further and under the assumption of a narrowband feedback channel, unitary beamforming can be used at the base station. We provide a performance evaluation of these techniques for an OFDMA system in the downlink and give quantitative results for the achievable capacity gains.
Keywords :
MIMO communication; OFDM modulation; cellular radio; cochannel interference; frequency division multiple access; interference suppression; multibeam antennas; adaptive MIMO transmission; cochannel interference; interference rejection; multiple antennas; narrowband feedback channel; orthogonal frequency division multiple access; realistic multicellular radio system; unitary beamforming; Array signal processing; Base stations; Downlink; Employment; Feedback; Frequency conversion; Interchannel interference; MIMO; Narrowband; Physical layer; OFDMA; adaptive transmission; array signal processing; cochannel interference; interference suppression;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radio and Wireless Symposium, 2008 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1462-8
Electronic_ISBN :
978-1-4244-1463-5
Type :
conf
DOI :
10.1109/RWS.2008.4463546
Filename :
4463546
Link To Document :
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