Method for adaptively allocating resources in communication...

Details Method for adaptively allocating resources in communication... Method for adaptively allocating resources in communication...

2008-05-20

2008-05-20

Lugo, David B. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

07376193

ABSTRACT:
A method for adaptively allocating resource can be simply implemented for reducing degradation of performance by effectively separating operations of sub-channel and time slot allocation and selection of modulation method and sequentially processing each of operations. A method for adaptively allocating resource in a communication system to sequentially process sub-carrier/time slot allocation and modulation method selection efficiently includes the step of a) computing average channel gains of sub-carriers/time slots for each user by using channel gains of sub-carriers/time slots for each user; b) computing average numbers of bits for each user by using required data rates and average channel gains of sub-carriers/time slots for each user; c) computing the number of sub-carriers/time slots allocated to each user and allocating the sub-carriers/time slots to each user; and d) selecting a modulation method with respect to each sub-carrier/time slot.

REFERENCES:
patent: 5479447 (1995-12-01), Chow et al.
patent: 2006/0083210 (2006-04-01), Li et al.
Cheong Yui Wong, et al. Multiuser OFDM With Adaptive Subcarrier, but, and Power Allocation; IEEE Journal on Selected Areas in Communications, vol. 17, No. 10, Oct. 1999, pp. 1747-1758.
Wonjong Rhee et al., Increase in Capacity of Multiuser OFDM System Using Dynamic Subchannel Allocation; (0-7803-5718-3/00, 2000 IEEE, pp. 1085-1089).
C.Y. Wong et al., Use of Linear Programming for Dynamic Subcarrier and Bit Allocation in Multiuser OFDM, Telecommunications Review Dec. 4, 2002 (p. 526) (pp. 513-526).

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