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We propose an online SNR estimation scheme for generalized fading channels. We derive the SNR estimate based on a statistical ratio of observables over a block of data, when the channel undergoes Nakagami fading. An online SNR estimator for AWGN channels has been derived by Summers and Wilson (see IEEE Trans. Commun., vol.46, no.4, p.421-23, 1998). Our SNR estimation scheme in this paper is for a general Nakagami fading channel, where the SNR estimates in Rayleigh fading and AWGN can be obtained as special cases corresponding to the Nakagami parameter m=1 and m=∞, respectively. As an example, we use our SNR estimate in the iterative decoding of turbo codes on both i.i.d and correlated Rayleigh fading channels. We show that the turbo decoder performance on Rayleigh fading channels using our SNR estimate is close to the performance using perfect knowledge of the fade amplitudes and the SNR
Published in:
Communications, 2001. ICC 2001. IEEE International Conference on
(Volume:4
)
Date of Conference: 2001
- Page(s):
- 1094 - 1098 vol.4
- Meeting Date :
- 11 Jun 2001-14 Jun 2001
- Print ISBN:
- 0-7803-7097-1
- INSPEC Accession Number:
- 7106214
- Conference Location :
- Helsinki
- Digital Object Identifier :
- 10.1109/ICC.2001.936822
- Product Type:
- Conference Publications
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