Paper Info
Title
Pilot Insertion Rate for SC-FDE Systems Employing Subspace-Based Channel Estimation
Abstract
Blind or semi-blind channel estimation techniques, such as subspace decomposition, often use second order statistics which can provide channel estimates that are multiplied by an unknown complex constant, known as the ambiguity. Determination of this ambiguity can be achieved by the insertion of a small number of pilot symbols within a data block. The goal of this paper is to investigate the bit error rate performance of single carrier frequency domain equalization (SC-FDE) based transmissions using different pilot insertion rates, with the goal of determining the ambiguity without sacrificing spectral efficiency. Using Monte Carlo simulation, our results show, for the conditions presented in this paper, the insertion of 4 pilot symbols per 64 symbol block (or a ratio of 1 pilot per 15 information symbols) achieves a BER of 10-3 with a power loss of 1dB or 1.5 dB (depending on the channel order) compared to a system with perfect ambiguity resolution.
Year
DOI
Venue
2015
10.1109/VTCSpring.2015.7146017
Vehicular Technology Conference
Keywords
Field
DocType
Monte Carlo methods,blind equalisers,channel estimation,error statistics,frequency division multiple access,higher order statistics,BER,Monte Carlo simulation,SC-FDE systems,bit error rate,blind channel estimation techniques,data block,pilot insertion rate,pilot symbols,second order statistics,single carrier frequency domain equalization based transmission,subspace based channel estimation,subspace decomposition
Equalization (audio),Subspace topology,Computer science,SC-FDE,Communication channel,Block (data storage),Electronic engineering,Ambiguity resolution,Spectral efficiency,Bit error rate
Conference
ISSN
Citations 
PageRank 
2577-2465
0
0.34
References 
Authors
5
3
Name
Order
Citations
PageRank
Shiva Gholami-Boroujeny151.19
Adel Omar Dahmane2248.77
D'Amours, C.301.01