Method and apparatus for performing spatial-division...

Details Method and apparatus for performing spatial-division... Method and apparatus for performing spatial-division...

2006-02-06

2008-09-16

Nguyen, David Q (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S328000, C370S342000, C370S286000, C375S233000, C375S341000, C375S262000

Reexamination Certificate

active

07426198

ABSTRACT:
A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.

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patent: 6563812 (2003-05-01), De
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patent: 6982968 (2006-01-01), Barratt et al.
patent: 2003/0100343 (2003-05-01), Zourntos et al.

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