Patent ID: 10250428

Abstract:
A transmitter transmits payload data using Orthogonal Frequency Division Multiplexed (OFDM) symbols, the transmitter including a frame builder to receive the payload data and to receive signalling data for use in detecting and recovering the payload data at a receiver, and to form the payload data into data-units for transmission. A modulator modulates plural sub-carriers of one or more OFDM symbols with the signalling data and the payload data in accordance with a modulation scheme to provide for each of plural sub-carriers a modulation symbol, a prefixing circuit prefixes a guard interval to the one or more OFDM symbols, and a transmission circuit transmits the one or more OFDM symbols. The modulator includes an I/Q interleaver to receive a real component of the modulation symbol of each of the one or more sub-carriers and to interleave the real component of the modulation symbols differently to the imaginary component.