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| An Efficient Sub-carrier Allocation Scheme for Multiuser OFDM Systems Using Adaptive Modulation |
| Liu Pei; Ge Jian-hua; Liu Gang |
| National Key Lab. of ISN, Xidian Univ., Xi’an 710071, China |
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Abstract In this paper, a sub-carrier allocation scheme is proposed for the future mul-tiuser mobile multimedia communication systems, which, is based on Orthogonal Frequency Division Multiplexing(OFDM) using adaptive modulation. This scheme uses an algorithm based on a rapacious optimal algorithm. Simulation result shows that this allocation algo-rithm is close to the optimum at effectiveness and efficiency with much fewer computations.
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Received: 10 March 2003
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2004, Vol. 26 
