Patent ID: 7535819

Claim:
A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, comprising: receiving an input data sequence; mapping the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation; generating a first OFDM symbol using the first transmission data sequence; mapping the input data sequence to a second transmission data sequence, including by performing a second mapping operation; generating a second OFDM symbol using the second transmission data sequence; and using a transmitter to transmit the first and/or second OFDM symbol using a three-band frequency hopping pattern and wherein mapping the input data sequence to the first and/or second transmission data sequence include(s) using a data pattern of 1 st 2 nd 3 rd 1 st 2 nd 3 rd band band band band band band b 0 b 0 b 1 b 1 b 2 b 2 b 3 b 3 b 4 b 4 b 5 b 5 b 6 b 6 b 7 b 7 b 8 b 8 . . . . . . . . . . . . . . . . . . b 54 b 54 b 55 b 55 b 56 b 56 b 57 b 57 b 58 b 58 b 59 b 59 . . . . . . . . . . . . . . . . . . b 597 b 597 b 598 b 598 b 599 b 599 .