DocumentCode :
2662263
Title :
OFDM-MIMO system using optimized differential Cayley unitary space time coding
Author :
Qatawneh, Abdul ; Ariet, Leandro De Haro
Author_Institution :
Univ. Politecnica de Madrid, Spain
Volume :
1
fYear :
2004
fDate :
26-29 Sept. 2004
Firstpage :
86
Abstract :
In this paper, we optimize the OFDM-MIMO system using Cayley differential unitary space-time coding. The overall system combines the advantages of the OFDM modulation, MIMO channel and Cayley codes. A high transmission rate is one of the main advantages of the Cayley code, in addition to the simplicity of the encoder-decoder design, without the need for channel information. The mapping parameters and the basis matrices are the main components of the Cayley code. The optimization process of the Cayley code, with respect to the mapping parameters, is performed for the MIMO channel model represented by the downlink from a base station (BS) to a given user, with the scatterers arranged in the form of circular rings around the transmitter and the receiver.
Keywords :
MIMO systems; OFDM modulation; Rayleigh channels; block codes; diversity reception; electromagnetic wave scattering; optimisation; space-time codes; Cayley code mapping parameters; OFDM-MIMO system; Rayleigh fading channel; base station downlink; basis matrices; code optimization; differential Cayley codes; differential space-time code; transmit diversity; transmitter/receiver circular ring scatterers; unitary block codes; Base stations; Block codes; Channel estimation; Convolutional codes; Downlink; MIMO; Maximum likelihood decoding; OFDM modulation; Space time codes; Transmitters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
ISSN :
1090-3038
Print_ISBN :
0-7803-8521-7
Type :
conf
DOI :
10.1109/VETECF.2004.1399931
Filename :
1399931
Link To Document :
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