Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1998-11-30
2000-08-15
Chin, Stephen
Pulse or digital communications
Spread spectrum
Direct sequence
375142, 375148, 375343, H04L 2730
Patent
active
061047473
ABSTRACT:
A method for determining an optimum number (Nopt) of complex samples for coherent averaging of a complex signal S(n) in a code division multiple access communication system includes estimating an initial number (Nint) of complex samples, obtaining fading channel autocorrelation sequence (R(n)) for a plurality (n) of complex samples, the plurality (n) number of complex samples corresponding to the initial number (Nint) of complex samples, computing a constant (K) based on the autocorrelation sequence (R(n)) and the plurality (n) of complex samples, substituting the initial number (Nint) of complex samples for the optimum number (Nopt) of complex samples if the constant (K) is equal or substantially equal to zero.
REFERENCES:
patent: 5640431 (1997-06-01), Bruckert et al.
patent: 5737327 (1998-04-01), Ling et al.
patent: 5809064 (1998-09-01), Fenton et al.
patent: 5963582 (1999-10-01), Stansell, Jr.
Jalloul Louay
Yousef Nabil
Chin Stephen
Jiang Lenny
Motorola Inc.
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