Patent ID: 8873651
Filing Date: 2014-10-28
Classification: H04B,H04L

Abstract:
1. An Orthogonal Frequency-Division Multiplexing (OFDM) generation apparatus for generating Absolute OFDM transmission signals from OFDM symbols, each comprising a plurality of OFDM subcarriers, for transmission in a multi-carrier data transmission system, said apparatus comprising: circuitry configured to: determine receiver mixing frequencies for use by an OFDM decoding apparatus of a receiving apparatus for mixing a received OFDM transmission signal from a passband frequency down to a baseband frequency by use of a receiver mixing frequency f inverse Discrete Fourier Transform (DFT) OFDM symbols into complex time-domain samples; and perform frequency mixing of said complex time-domain samples of said OFDM symbols from a baseband frequency up to a passband frequency by use of a mixing frequency f