Delay and channel estimation for multi-carrier CDMA system

Details Delay and channel estimation for multi-carrier CDMA system Delay and channel estimation for multi-carrier CDMA system

2005-04-05

2005-04-05

Vu, Huy D. (Department: 2665)

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

C370S441000

Reexamination Certificate

active

06876645

ABSTRACT:
A receiver for a multi-carrier CDMA system receives a signal transmitted having a known pilot sequence on plural sub-carriers. The system includes plural down-converters for down-converting the received signal to baseband signals. A delay and channel estimator correlates at least one of the baseband signals with a single wideband pilot signal, the single wideband pilot signal including all of the known pilot sequences, to produce an estimate of channel gain and multi-path delay. Plural demodulators, one for each of the plural sub carriers, are operatively coupled to the delay and channel estimator, each for demodulating one of the plural baseband signals using the estimate of channel gain and multi-path delay.

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International Search Report, PCT/US01/41274, Apr. 24, 2002.

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