Search International and National Patent Collections

1. (WO2017032625) A RECEIVER, A PLURALITY OF TRANSMITTERS, A METHOD OF RECEIVING USER DATA FROM MULTIPLE TRANSMITTERS, AND A METHOD OF TRANSMITTING USER DATA

Pub. No.:    WO/2017/032625    International Application No.:    PCT/EP2016/069324
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Tue Aug 16 01:59:59 CEST 2016
IPC: H04J 13/00
H04L 1/00
Applicants: ALCATEL LUCENT
Inventors: FANG, Dong
KUCERA, Stepan
CLAUSSEN, Holger
Title: A RECEIVER, A PLURALITY OF TRANSMITTERS, A METHOD OF RECEIVING USER DATA FROM MULTIPLE TRANSMITTERS, AND A METHOD OF TRANSMITTING USER DATA
Abstract:
A method is provided of receiving user data from multiple transmitters, the user data from each transmitter having been encoded as a Low Density Lattice codeword, and the multiple Low Density Lattice codewords having been transmitted so as to be received as a combined signal at a receiver, the method of receiving comprising the steps of: (i) receiving the signal,(ii) calculating coefficients of linear combinations of the codewords from the multiple transmitters,(iii) calculating a scaling factor to be applied to the signal based on the coefficients, (iv) applying the scaling factor to the signal to provide a linear combination of the codewords, (v) decoding the linear combination of the codewords based on channel state information to obtain an optimal independent linear combination of user data, (vi) repeating steps (ii), (iii) (iv)and (v) to obtain at least as many optimal independent linear combinations as the number of transmitters, and recovering the user data from the optimal independent linear combinations.