Data processing apparatus and method operable to map and...

Details Data processing apparatus and method operable to map and... Data processing apparatus and method operable to map and...

2008-09-16

2008-09-16

Ghayour, Mohammad H. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C455S059000

Reexamination Certificate

active

10806524

ABSTRACT:
A data processing apparatus maps input symbols to be communicated onto a predetermined number of carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM carrier signals. The interleaver memory reads-out the data symbols on to the OFDM carriers to effect the mapping, the read-out being in a different order than the read-in, and the order being determined from a set of addresses. The set of addresses are generated from an address generator. The address generator includes a linear feedback shift register and a permutation circuit.

REFERENCES:
patent: 6353900 (2002-03-01), Sindhushayana et al.
patent: 2006/0062314 (2006-03-01), Palin et al.
ETSI (ETSI EN 300 744 V1.5.1 (2004-1.1)) in the annex F pp. 50-60, ETSI Nov. 2004.
European Telecommunications Standards Institute: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television”, ETSI EN 300 744 V1.4,1, Jan. 2001, XP002207124.
Anonymous: “Features of ISDB-T” Digital Broadcasting Experts Group (DIBEG), ′Online!, Jul. 28, 2000, XP002249911.

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