DocumentCode :
3181081
Title :
Performance of space-time-coded OFDM with sectorized antenna reception
Author :
Klenner, Peter ; Kammeyer, Karl-Dirk
Author_Institution :
Univ. of Bremen, Bremen
fYear :
2008
fDate :
26-27 Feb. 2008
Firstpage :
304
Lastpage :
310
Abstract :
Diversity is a well-known means to counter the detrimental effect of fading. Against this background, space-time codes have been designed to facilitate transmit diversity with a suitable receiver. Furthermore, space-time codes combined with OFDM allow for the utilization of frequency selective channels. However, a general assumption underlying the design of space-time codes is the time-invariance of the channel, which is violated in a high mobility environment. Large Doppler spread causing rapidly time-varying channels can be compensated at the receiver by sectorized antennas, which restrict the angle of incidence of imping waves to a finite range. Compared to an omnidirectional antenna, the resulting Doppler spread of a sector antenna and the channels time-variance are reduced. In this paper, we demonstrate the benefits of Doppler compensating sectorized antennas for space-time coded OFDM.
Keywords :
frequency division multiplexing; frequency selective surfaces; space-time codes; transmitting antennas; frequency selective channels; omnidirectional antenna; sectorized antenna reception; space-time-coded OFDM; Counting circuits; Fading; Fluctuations; Interference; Maximum likelihood detection; OFDM modulation; Receiving antennas; Space time codes; Transmitters; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Smart Antennas, 2008. WSA 2008. International ITG Workshop on
Conference_Location :
Vienna
Print_ISBN :
978-1-4244-1756-8
Electronic_ISBN :
978-1-4244-1757-5
Type :
conf
DOI :
10.1109/WSA.2008.4475574
Filename :
4475574
Link To Document :
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