CDMA radio device and simple path estimating method employed...

Details CDMA radio device and simple path estimating method employed... CDMA radio device and simple path estimating method employed...

2007-11-06

2007-11-06

Duong, Frank (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S135000

Reexamination Certificate

active

10642692

ABSTRACT:
A CDMA radio device is provided which is capable of reducing a hardware scale and providing more accurate path selection with low power consumptions. A down-sampling part outputs data of which sampling frequency is made lower than A/D sampling frequency. A correlator part performs correlation calculation of the data using specific spread codes designated in cell information to create a delay profile. A first path selection part selects a path in the delay profile and transfers selection information to an up-sampling part. The up-sampling part supplements delay profile data at sampling time that has been lost in the down-sampling part. A second path selection part transfers some location information of ultimately determined paths to a base station spread demodulation unit or a mobile station spread demodulation unit as a path timing signal.

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