Please use this identifier to cite or link to this item:
Title: A Comb-Type Pilot Symbol Aided Channel Estimation for STBC based OFDM System over Frequency Selective Channel
Authors: Patra, J P
Singh, P
Keywords: OFDM
Pilot Subcarrier
Channel Estimation
Issue Date: Dec-2013
Citation: Prime Asia 2013 (Asia Pacific Conference on Postgratduate Research in Microelectronics and electronics) GITAM University Visakhapatnam, 20-21 Dec 2013.
Abstract: In this paper, the channel estimation technique for space time block code (STBC) based multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) is investigated for multipath fading channel. The channel estimation is based on the comb-type pilot arrangement where the pilot subcarriers are placed at regular interval of each OFDM symbol block and are orthogonal between different transmitting antennas. Due to the advantages of orthogonal pilot subcarrier, the original transmitted signal is completely recovered from the mixed transmitted signal at the receiver side. The least square (LS) algorithm is adopted for estimation of channel at pilot subcarrier while the interpolation is done at data subcarrier. The performance of the developed channel estimation technique is compared with the traditional single-input single output (SISO) OFDM system on the basis of symbol error rate (SER). The simulation results show that the STBC OFDM gives better performance than SISO OFDM and the SER decreases as the signal to noise ratio (SNR) and the number of receive antenna increases.
Description: Copyright belongs to the proceeding of publisher
Appears in Collections:Conference Papers

Files in This Item:
File Description SizeFormat 
A Comb-Type Pilot Symbol Aided Channel.pdf311.92 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.