Orthogonal division multiple access technique incorporating...

Details Orthogonal division multiple access technique incorporating... Orthogonal division multiple access technique incorporating...

2007-11-13

2007-11-13

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Transmitters

C296S203030

Reexamination Certificate

active

10096148

ABSTRACT:
A multiple access technique is described, which is capable of maintaining orthogonality between transmitted signals in multipath conditions, even when part of or all of the transmitted signals belong to the family of Single Carrier modulation. The Single Carrier signals are converted into multicarrier signals which utilize just a fraction of the spectral lines by transmitting each fragment of data several times. The orthogonal multiplexing technique enables transmitters to enjoy both the advantages of OFDMA, such as noninterference between signals, adaptive bandwidth allocation and wideband diversity, and the Peak-to-Average Power Ratio advantage of the single carrier modulation. The multiplexing technique described allows to incorporate in the same multiple access system both OFDM signals and Single Carrier signals.

REFERENCES:
patent: 6590944 (2003-07-01), Kroeger
patent: 6977915 (2005-12-01), Chen et al.
patent: 2005/0201326 (2005-09-01), Lakkis

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