Publication No 36345

Author(s)

Necker, M.C.; Stüber, G.L.

Title

Totally Blind Channel Estimation for OFDM on Fast Varying Mobile Radio Channels

Keywords

OFDM; MOBILE COMMUNICATION; FADING; ESTIMATION; CHANNEL

Abstract

A new blind channel estimation scheme for OFDM-systems is proposed based on the ML-principle. By avoiding the use of second- and higher-order statistics, a very fast convergence rate is achieved. A novel approach is also proposed for resolving the phase ambiguity of the blind channel estimate without the need for any reference symbols. The approach combines different modulation schemes on adjacent subcarriers, such as 3-PSK and QPSK, to resolve phase ambiguity. Simulations were performed for mobile radio environments with high Doppler frequencies and short-to-medium delay spreads. The achieved performance is comparable to that of pilot-based channel estimation for the case of QPSK-modulation.

Year

2004

Reference entry

Necker, M.C.; Stüber, G.L.
Totally Blind Channel Estimation for OFDM on Fast Varying Mobile Radio Channels
IEEE Transactions on Wireless Communications, Vol. 3, No. 5, September 2004, pp. 1514-1525

BibTex file

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Full Text

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