Cross-Layer Interference Mitigation for Cognitive Radio MIMO Systems

Cross-Layer Interference Mitigation for Cognitive Radio MIMO Systems
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认知无线电 MIMO 系统的跨层干扰缓解

DOI:
10.1109/icc.2011.5962698
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发表时间:
2011
期刊:
--
影响因子:
--
通讯作者:
Chen Z
Chen Z
中科院分区:
--
文献类型:
--
作者:
Chen Z

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本文从跨层的角度研究了认知无线电(CR)多输入多输出(MIMO)网络与主时分双工(TDD)系统共存时的干扰抑制。联合考虑了媒体接入控制(MAC)层的信道分配和CR网络物理层的基于子空间的预编码方案,以最小化对主用户的干扰并最大化CR吞吐量。针对CR节点间存在和不存在信道信息的情况,分别提出了联合迭代信道分配和预编码(JICAP)和非迭代信道分配和预编码(NICAP)两种分布式跨层算法。此外,还提出了一种支持NICAP的信道估计方案。通过仿真验证了所提算法相对于非跨层算法的有效性。
In this paper, we investigate the interference mitigation from a cross-layer perspective for a cognitive radio (CR) multiple-input multiple-output (MIMO) network coexisting with a primary time-division-duplexing (TDD) system. The channel allocation in the media access control (MAC) layer and a subspace-based precoding scheme in the physical layer of the CR network are jointly considered to minimise the interference to the primary user and maximise the CR throughput. Two distributed cross-layer algorithms, namely, joint iterative channel allocation and precoding (JICAP) and non-iterative channel allocation and precoding (NICAP), are proposed for the cases with and without channel information among CR nodes, respectively. Moreover, a channel estimation scheme is also proposed to enable the NICAP. The effectiveness of the proposed algorithms over non-cross-layer counterpart is demonstrated via simulations.
多天线自组织网络中避免干扰的联合迭代信道分配和波束成形算法
DOI: --
发表时间: 2007
期刊: IEEE Military Communications Conference
影响因子: --
作者:
E. Zeydan;D. Kivanc;U. Tureli
通讯作者: U. Tureli
使用自组织网络的融合两阶段博弈减轻跨层干扰
DOI: --
发表时间: 2008
期刊: Annual Conference on Information Sciences and Systems
影响因子: --
作者:
E. Zeydan;D. Kivanc;U. Tureli
通讯作者: U. Tureli