Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-02-13
2007-02-13
Kumar, Pankaj (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
09204279
ABSTRACT:
In a receptive system of a base station according to the communication system of a PDMA, CDMA and the like, the reception signals from a plurality of users received on a plurality of antennas are frequency-converted by a frequency conversion circuit, and then converted into digital signals by an A/D converter to be applied to a DSP. The signal of a particular user is extracted from the input signal by an adaptive array. Also, the interference user signal component is removed by an interference canceller. Accordingly, the signal component of a desired user having the interference component caused by an unrequired user signal suppressed is output. Thus, the communication quality in a radio communication system such as a mobile communication system can be improved.
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Armstrong Kratz Quintos Hanson & Brooks, LLP
Kumar Pankaj
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