Patent ID: 7539259
Filing Date: 2009-05-26
Classification: H04B,H04L

Abstract:
1. A method of communication using Orthogonal Frequency Division Multiplexing (‘OFDM’) from a transmitter comprising a plurality of transmit antenna means and a receiver comprising at least one receive antenna means, the method comprising: generating bit streams and corresponding sets of N frequency domain carrier amplitudes ({tilde over (s)}(kN+j), 0≦j≦N−1) modulated as OFDM symbols subsequently to be transmitted from the transmitter, where k is the OFDM symbol number and j indicates the corresponding OFDM carrier number; inserting affix information into guard intervals between consecutive time domain OFDM symbols; transmitting said time domain OFDM symbols including said affix information from said transmitter to said receiver; using said affix information at the receiver to estimate the Channel Impulse Responses (H using the estimated Channel Impulse Response (Ĥ wherein said transmitter uses N