Paper Info
Title
Subspace Decomposition for Channel Estimation in SC-FDE Systems
Abstract
Single carrier frequency division multiple access (SC-FDMA), a multiple user access scheme based on the single carrier frequency domain equalization (SC-FDE) technique, has been proposed for the uplink in fourth generation (4G) mobile communications. SC- FDE requires reliable channel estimates to maintain an acceptable bit error rate (BER) performance. Much research focuses on the use of pilot symbols which reduces the spectral efficiency of SC-FDE systems. In this paper, we propose a subspace decomposition approach for semi-blind channel estimation in SC-FDE systems as a means to reduce or eliminate the need for pilot symbols and increase their overall spectral efficiency. Simulation results show that, under the conditions presented in this paper, a BER of 10-3 can be achieved with a power loss of roughly 1 dB compared to a system with perfect channel estimates. This result is achieved with channel estimates that have a normalized mean square error (NMSE) less than 1%.
Year
DOI
Venue
2013
10.1109/VTCSpring.2013.6692771
Vehicular Technology Conference
Keywords
Field
DocType
4G mobile communication,channel estimation,error statistics,frequency division multiple access,mean square error methods,4G mobile communications,BER performance,NMSE,SC-FDE systems,SC-FDMA,bit error rate performance,fourth generation mobile communications,normalized mean square error,pilot symbols,semi-blind channel estimation,single carrier frequency division multiple access,single carrier frequency domain equalization technique,spectral efficiency,subspace decomposition approach
Equalization (audio),Computer science,SC-FDE,Communication channel,Electronic engineering,Spectral efficiency,Frequency-division multiple access,Mobile telephony,Telecommunications link,Bit error rate
Conference
ISSN
Citations 
PageRank 
1550-2252
2
0.43
References 
Authors
6
3
Name
Order
Citations
PageRank
Claude D'Amours120.43
B. Champagne254274.73
Adel Omar Dahmane3248.77