Block-type pilot channel estimation for OFDM systems under frequency selective fading channels
Block-type pilot channel estimation for OFDM systems under frequency selective fading channels
- Author(s): Lei Shi ; Baolong Guo ; Lei Zhao
- DOI: 10.1049/cp.2009.1880
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- Author(s): Lei Shi ; Baolong Guo ; Lei Zhao Source: IET International Communication Conference on Wireless Mobile & Computing (CCWMC 2009), 2009 p. 21 – 24
- Conference: IET International Communication Conference on Wireless Mobile & Computing (CCWMC 2009)
- DOI: 10.1049/cp.2009.1880
- ISBN: 978 1 84919 138 8
- Location: Shanghai, China
- Conference date: 7-9 Dec. 2009
- Format: PDF
Orthogonal frequency division multiplexing (OFDM) is one key technology in wireless multimedia communication. In this paper, the performance of channel estimation methods for OFDM systems based on block-type under frequency selective fading channels is discussed. Analysis of a 3G carrier model with 1 MHz bandwidth under frequency selective fading channels is made. The pilot signal estimation based on LS, MMSE, LMMSE (a simplified MMSE algorithm with low-rank approximation using singular value decomposition) criteria, and channel interpolation based on the simple linear interpolation method. Simulation indicates its good anti-multi-path performance and anti-doppler frequency shift ability.
Inspec keywords: multimedia communication; fading channels; interpolation; channel estimation; OFDM modulation; 3G mobile communication
Subjects: Modulation and coding methods; Communication channel equalisation and identification; Mobile radio systems; Multimedia communications
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