Method for parallel type interference cancellation in code...

Details Method for parallel type interference cancellation in code... Method for parallel type interference cancellation in code...

2006-08-29

2006-08-29

Patel, Jay K. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S144000

Reexamination Certificate

active

07099376

ABSTRACT:
A method for parallel type interference cancellation in a CDMA receiver, wherein minimum processing delay time is required while ensuring performance of an interference cancellation device, and space for embedding hardware for implementing the method can be reduced. The method for parallel type interference cancellation in a CDMA receiver, comprising: (a) when an over sample position of a received signal reaches the end of a symbol of a user, completing temporary detecting and recovering the symbol of the user; (b) generating a residual signal by using the recovered signal of the user and received signal state; and (c) detecting symbol information by obtaining an interference cancelled signal by adding the residual signal to the recovered signal of the user.

REFERENCES:
patent: 5644592 (1997-07-01), Divsalar et al.
patent: 2002/0196841 (2002-12-01), Kama
patent: 2000/6470 (2000-01-01), None
patent: 10-0255565 (2000-02-01), None
Correal et al., A DSP-Based DS-CDMA. . , IEEE Journal on Selected Areas in Communications, vol. 17, No. 4, Apr. 1999.

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