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Enhanced SNR estimates from direct-sequence spread-spectrum demodulator statistics

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2 Author(s)
Boyd, S.W. ; Holcombe Dept. of Electr. & Comput. Eng., Clemson Univ., Clemson, SC ; Pursley, M.B.

Demodulator statistics are used in a binary direct-sequence spread-spectrum receiver to improve the performance of a well-known signal-to-noise ratio (SNR) estimate for ratios of the binary symbol energy to one-sided noise density that are below approximately 7 dB. The new estimate requires no pilot symbols, training sequences, data symbol decisions, or channel measurements, and it can be obtained prior to decoding.

Published in:

Communications Letters, IEEE  (Volume:13 ,  Issue: 5 )