Performance Evaluation of Memory-less and Kalman-based Channel Estimation for OFDMA

The next generation wireless systems based onOrthogonal Frequency Division Multiple Access (OFDMA) needto operate in widely different deployment and usage scenarios. Thus, support for flexible resource allocation is important. In this paper we investigate the performance of different memory-less and memory-based channel estimators with different OFDMA subcarrier allocation schemes and different pilot patterns. We evaluate the performance in various fading environments and for different user terminal velocities. The results show that channel estimation can perform well enough for time-frequency localized resources as small as 22 channel symbols with two pilots in many important scenarios. The results provided can be used to identify appropriate subcarrier allocations for the next generation OFDMA based wireless systems.

Svensson, Tommy,1970Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tommys (författare)
Sternad, Mikael,1957Uppsala universitet,Uppsala University (författare)
Uppsala universitetChalmers tekniska högskola (creator_code:org_t)

Ingår i:VTC Spring 2009 - IEEE 69th Vehicular Technology Conference; Barcelona; Spain; 26 April 2009 through 29 April 2009, s. Art. no. 5073788-1550-22529781424425174

Av författaren/redakt...: Aronsson, Daniel; Svensson, Tommy, ...; Sternad, Mikael, ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Telekommunikatio ...

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