Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2003-03-13
2009-06-30
Ghayour, Mohammad H (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S346000
Reexamination Certificate
active
07555067
ABSTRACT:
A method and apparatus adaptively scales the decoder input for a low-cost user equipment (UE) to reduce the memory requirement without degrading decoder performance. In order to optimize the decoder performance for a small number of input bits, the method estimates the interference of the inner receiver output and scales the decoder input such that its variance is kept constant. The method further estimates the interference of the Pilot channel and translates it into the interference of the data channel in order to avoid the estimation bias problem in a noisy channel. The method then uses a difference value of the phase-corrected pilot symbol to solve the fading rate dependency problem of the sample mean method. For a Rake receiver, the method sums up the interference estimated from each finger. For a multi-antenna receiver, the method sums up the interference estimated from each antenna demodulating element.
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Brady III Wade James
Ghayour Mohammad H
Neerings Ronald O.
Panwalkar Vineeta S
Telecky , Jr. Frederick J.
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