continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6846/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :08/08/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING A MIMO
RECEIVER
(51) International classification :H04B 7/08 (71)Name of Applicant :
(31) Priority Document No :60/774,436
1)NOKIA CORPORATION
(32) Priority Date :17/01/2006
Address of Applicant :KEILALAHDENTIE 4, FIN-02150
(33) Name of priority country :U.S.A.
ESPOO, FINLAND Finland
(86) International Application No :PCT/IB2007/000386 (72)Name of Inventor :
Filing Date
:16/02/2007
1)IONESCU, DUMITRU MIHAI
(87) International Publication No :WO 2007/093907
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
Disclosed is a method, computer program product and an apparatus providing a novel multiple input/multiple output (MIMO)
receiver. The method includes receiving a plurality of signals through a plurality of antennas, the plurality of signals being modulated
with-space-time-lattice code; removing an effect of a channel matrix from the received signals to provide an equalized received signal;
and lattice detecting the equalized received signal based on a Tanner graph representation of the lattice. The Tanner graph
representation is one where lattice points inside a shaping region of interest are partitioned into a plurality of subgroups, where each
subgroup includes a plurality of different lattice points labeled by an Abelian group block codeword, and where lattice detecting
operates on the subgroups. The labels of all subgroups form an Abelian block code represented by the Tanner graph, and lattice
detecting further includes performing belief propagation on a corresponding non-binary label Tanner graph to yield a total a posterior
probability (APP) and extrinsic APPs of the labels and their coordinates, and obtaining APPs of individual lattice points.
No. of Pages : 41 No. of Claims : 58
The Patent Office Journal 24/10/2008 26258