一种基于轮回的认知OFDM子载波分配方法

doi:10.3969/j.issn.1000-0801.2012.04.029

Abstract

Abstract:

The paper presents a ring-based sub-carrier allocation method, which can be divided into two steps, the initial allocation provides fairness among multi-users and the iterative optimization allocation is for improvement. The simulation results show the method not only can avoid selecting deep fading sub-channel, but also can achieve better bit error performance without any addition of computational complexity.

Key words: CR-OFDM, ring, sub-carrier allocation, bit error performance

Jingxiu Chi,Xiaorong Xu,Jianwu Zhang. A Sub-Carrier Allocation Method Based on Ring for OFDM-CR System[J]. Telecommunications Science, 2012, 28(4): 124-129.

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References 4

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算法	比较操作次数	计算复杂度
Wong	（N-1）N/2+iter 1（N²/2）	O（N²）
ring算法	N（N-1）/2+iter 2（N²/2）	O（N²）
WSA	2N ln N+2KN	O（KN）

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A Sub-Carrier Allocation Method Based on Ring for OFDM-CR System

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