Interference cancellation receiver for use in a CDMA system

Details Interference cancellation receiver for use in a CDMA system Interference cancellation receiver for use in a CDMA system

2006-04-11

2006-04-11

Chin, Stephen (Department: 2634)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S140000, C375S147000

Reexamination Certificate

active

07027491

ABSTRACT:
An interference cancellation receiver reduces the multiple access interference in a CDMA system. The receiver includes a demodulator for receiving a residual signal or a received signal from a calling terminal as an over-sample unit baseband spread signal and down-sampling the baseband spread signal on a chip basis to output a demodulation signal, a regenerator for performing a bit decision for the demodulation signal, regenerating signals through the channelization and scrambling and converting the regenerated signals to signals on the over-sample basis, an adder for summing up the over-sample unit signals, a filter for filtering the summed-up signal to output a band spread signal, a subtractor for subtracting the band spread signal from the received signal to output the residual signal and a delay for keeping timing with the residual signal by delaying the chip unit signals outputted from the regenerator.

REFERENCES:
patent: 6574270 (2003-06-01), Madkour et al.
patent: 6580771 (2003-06-01), Kenney
patent: 2003/0095590 (2003-05-01), Fuller et al.
patent: 2000-78108 (2000-03-01), None
patent: 10-255565 (2000-05-01), None
Kim, et al.; Multi-Mode Substractive Interference Cancellation For Asynchronous Multi-Path Channels.

Affiliated with

Also associated with

Rating

Interference cancellation receiver for use in a CDMA system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interference cancellation receiver for use in a CDMA system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interference cancellation receiver for use in a CDMA system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3554495