Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SPHERE DECODING APPARATUS FOR MIMO CHANNEL
Document Type and Number:
Japanese Patent JP2012070402
Kind Code:
A
Abstract:

To provide methods and apparatuses for decoding code words received over a MIMO channel.

A cost function is computed for each constellation point of an Mth rank or spatial layer, and Ncand of those constellation points having minimum cost are preserved as candidate points, where Ncand is a parameter specified to the decoding algorithm. In addition, a cost function may be computed for all possible transitions from the Ncand candidate points of the Mth rank to all possible constellation points of the (M-1)th spatial layer, and AΛ of those transitions having minimum cost are preserved as candidate points. The process is repeated for all spatial layers, resulting in the identification of Ncand candidate code words and their associated cost functions.


Inventors:
SAMPATH HEMANTH
KADOUS TAMER
Application Number:
JP2011237292A
Publication Date:
April 05, 2012
Filing Date:
October 28, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
QUALCOMM INC
International Classes:
H04J99/00; H04B7/04; H04J11/00
Domestic Patent References:
JP2007519281A2007-07-12
JP2006505172A2006-02-09
Attorney, Agent or Firm:
Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori