Multiuser interference cancellation apparatus

Details Multiuser interference cancellation apparatus Multiuser interference cancellation apparatus

2007-04-10

2007-04-10

To, Doris H. (Department: 2616)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S342000, C375S148000

Reexamination Certificate

active

10162194

ABSTRACT:
A multiuser interference elimination apparatus in which, even in the second and other subsequent stages, adaptive updating of antenna weights can be performed and antenna weights can be generated with accuracy by using interference-canceled received signals. A multiplier performs gain correction by multiplying a symbol replica transmitted from the preceding stage by a coefficient [1−(1−α)m−1], and an antenna signal regeneration section converts the gain-corrected symbol replica into antenna signals. Adders add the antenna signals converted by the antenna signal regeneration section to outputs from despread devices and output the addition results to an antenna weight adaptive updating section. The antenna weight adaptive updating section performs adaptive updating of antenna weights by using the addition results.

REFERENCES:
patent: 6600729 (2003-07-01), Suzuki
patent: 6614766 (2003-09-01), Seki et al.
patent: 6944208 (2005-09-01), Miyoshi et al.
patent: 11-205286 (1999-07-01), None
patent: H11-205286 (1999-07-01), None
patent: 2001-16148 (2001-01-01), None
patent: 1998-701743 (1998-06-01), None
patent: WO 01/28107 (2001-04-01), None
Naoto Ishii, et al., “Development of a Parallel Multi-User Interference Canceller for W-CDMA”, Communication Society Conference Papers, Institute of Electronics, Information and Communication Engineers, Aug. 16, 1999, 1, p. 251, B-5-16.
S. Marinkovic et al., “Space-Time Iterative and Multistage Receiver Structures for CDMA Mobile Communication Systems”, VTC 2001 SPRING. IEEE VTS 53RD, Vehicular Technology Conference, (May 6-9, 2001), pp. 1799-1803 with Abstract.

Affiliated with

Also associated with

Rating

Multiuser interference cancellation apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiuser interference cancellation apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiuser interference cancellation apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3733537