DocumentCode :
1890011
Title :
Improved channel estimation in TDMA by reproduction with applications in GSM/GPRS under co-channel interference
Author :
Sherratt, R. Simon ; Ma, M.
Author_Institution :
Sch. of Syst. Eng., Reading Univ., UK
fYear :
2005
fDate :
14-16 June 2005
Firstpage :
215
Lastpage :
219
Abstract :
Finding an estimate of the channel impulse response (CIR) by correlating a received known (training) sequence with the sent training sequence is commonplace. Where required, it is also common to truncate the longer correlation to a sub-set of correlation coefficients by finding the set of N sequential correlation coefficients with the maximum power. This paper presents a new approach to selecting the optimal set of N CIR coefficients from the correlation rather than relying on power. The algorithm reconstructs a set of predicted symbols using the training sequence and various sub-sets of the correlation to find the sub-set that results in the minimum mean squared error between the actual received symbols and the reconstructed symbols. The application of the algorithm is presented in the context of the TDMA based GSM/GPRS system to demonstrate an improvement in the system performance with the new algorithm and the results are presented in the paper. However, the application lends itself to any training sequence based communication system often found within wireless consumer electronic device.
Keywords :
cellular radio; channel estimation; cochannel interference; least mean squares methods; packet radio networks; time division multiple access; GSM-GPRS system; MMSE; TDMA; channel estimation; channel impulse response; cochannel interference; minimum mean squared error; symbol reconstruction; training sequence; AWGN; Channel estimation; Consumer electronics; Cost function; GSM; Ground penetrating radar; Interchannel interference; Maximum likelihood estimation; Signal processing algorithms; Time division multiple access;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Consumer Electronics, 2005. (ISCE 2005). Proceedings of the Ninth International Symposium on
Print_ISBN :
0-7803-8920-4
Type :
conf
DOI :
10.1109/ISCE.2005.1502372
Filename :
1502372
Link To Document :
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