Method for uplink multiuser OFM with constrained inputs

Details Method for uplink multiuser OFM with constrained inputs Method for uplink multiuser OFM with constrained inputs

2007-12-04

2010-11-30

Moe, Aung S (Department: 2474)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Quadrature carriers

C370S208000, C370S437000, C375S298000

Reexamination Certificate

active

07843802

ABSTRACT:
A method setting a maximum number of determinations for computing power allocation responsive to allocating power among multiple users in one subchannel of an OFDM system; beginning determination of maximum sum-throughput of users in the OFDM system with a randomly generated power profile with an iteration including: i) computing a sum-throughput using a power profile; ii) keeping a previous power profile if the sum-throughput of the current power profile sum-throughput is less than the previous power profile sum-throughput; iii) finding an index of power profile that has maximum sum-throughput; and ascertaining power profiles when the iteration is complete.

REFERENCES:
patent: 2006/0023745 (2006-02-01), Koo et al.
patent: 2009/0196362 (2009-08-01), Song et al.
Kim, K. et al., “Joint Subcarrier and Power Allocation in Uplink OFDMA Systems” IEEE Communications Letter, vol. 9, No. 6, Jun. 2005.
Li, H. et al., “An Analysis on Uplink OFDMA Optimality”, Proc. of Vehicular Tech. Conf (VTC)-Spring, Melbourne, Australia, May 2006.

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