Patent ID: 8126070
Filing Date: 2012-02-28
Classification: H04L

Abstract:
1. A method of forming an OFDM signal from a baseband signal, including the steps of: partitioning a block of baseband signal samples into sub-blocks; mapping the sub-blocks onto adjacent sub-carrier blocks of an OFDM multi-carrier; transforming each mapped sub-block into a corresponding unprefixed OFDM symbol; adding a cyclic prefix to each un-prefixed OFDM symbol to form prefixed OFDM symbols; performing phase compensations forcing the un-prefixed OFDM symbol part of all prefixed OFDM symbols to start at the same phase after subsequent up-conversion to radio frequency; up-converting the phase compensated prefixed OFDM symbols to respective radio frequency bands having center frequencies and bandwidths that preserve the OFDM multi-carrier structure; and combining the up-converted phase compensated prefixed OFDM symbols into an OFDM signal.