Patent ID: 7742536
Filing Date: 2010-06-22
Classification: H04B,H04L

Abstract:
1. A method for transmitting data through a MIMO-OFDM system having a transmitter and a receiver that communicate through a channel, wherein the transmitter comprises M T transmitter units TU 0 . . . TU M −1 and the receiver comprises M R receiver units RU 0 . . . RU M −1 , said method comprising the steps of a) feeding a sequence of original symbols to said transmitter, each original symbol comprising N>1 vectors c b) OFDM-modulating said original symbols in said transmitter units and transmitting them to said receiver units, c) receiving, by said receiver units, said transmitted symbols distorted by the channel and decoding them into received symbols, wherein each received symbol comprises N vectors r with √{square root over (E s L an integer smaller than N, H w d) said method further comprising the step of carrying out at least one computation of a function f(H(s f(H(s with coefficients A l i wherein a number Q i of said coefficients A l i are arbitrary functions and a number N−Q i said coefficients A l i are zero, with 1≦Q i <N e) said method further comprising the step of carrying out at least one computation of a said function f step A) determining from known H(s step B) determining, for at least some of said polynomial functions f