Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-10-21
2011-11-29
Payne, David C. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S355000, C725S116000
Reexamination Certificate
active
08068532
ABSTRACT:
Coded digital data symbols sent through a transmission channel of a communications network are received in a receiver. Estimates (y) represented by a first number (a+b) of bits are calculated, and modified estimates (y′) represented by a second number (c) of bits provided therefrom, the second number being lower than the first number. An amplitude value is calculated for each estimate (y), and an averaged amplitude value calculated for a number of amplitude values. A scaling factor (s) is calculated form the averaged amplitude value, and scaled estimates generated in dependence of die scaling factor. The scaling factor is used for a number of scaled estimates corresponding to the number of amplitude values for which the averaged amplitude value was calculated. Thus a better scaling factor is provided for most channel cases, which can still be calculated with the limited computational resources of a terminal for such networks.
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Cedergren Andreas
Jonsson Elias
Hassan Sarah
Payne David C.
Telefonaktiebolaget L M Ericsson (Publ)
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