Patent Number:
8,718,204
Title:
Multi-stream maximum-likelihood demodulation based on bitwise constellation partitioning
Abstract:
One of a plurality of candidate data symbols is selected. All possible values of the selected one candidate data symbol are grouped into two or more bit groups. A bit group is selected from the two or more bit groups. A local optimum candidate value from values in the selected bit group is determined for the selected one candidate data symbol for a given set of values corresponding to all of the plurality of candidate data symbols but the selected one candidate data symbol, the local optimum candidate value minimizing a distance value corresponding to a distance between the received data symbol vector and a channel matrix multiplied with the candidate vector, without calculating the distance value. A likelihood value is calculated for a bit in the selected one candidate data symbol based at least in part on the determined local optimum candidate value.
Inventors:
Lee; Jungwon (San Diego, CA), Choi; Jiwoong P. (Mountain View, CA), Lou; Hui-Ling (Sunnyvale, CA)
Assignee:
Marvell International Ltd.
International Classification:
H03D 1/00 (20060101); H04L 27/06 (20060101)
Expiration Date:
5/06/12018