A modified Benes network is proposed to be used as an optimal shuffle network in worldwide interoperability for microwave access （WiMAX） low density parity check （LDPC） decoders, When the size of the input is not ...A modified Benes network is proposed to be used as an optimal shuffle network in worldwide interoperability for microwave access （WiMAX） low density parity check （LDPC） decoders, When the size of the input is not a power of two, the modified Benes network can achieve the most optimal performance. This modified Benes network is non-blocking and can perform any sorts of permutations, so it can support 19 modes specified in the WiMAX system. Furthermore, an efficient algorithm to generate the control signals for all the 2 × 2 switches in this network is derived, which can reduce the hardware complexity and overall latency of the modified Benes network. Synthesis results show that the proposed control signal generator can save 25.4% chip area and the overall network latency can be reduced by 36. 2%.展开更多
微波存取全球互通是一种基于IEEE802.16标准的宽带无线接入技术,是针对微波和毫米波频段提出的一种空中接口标准,具有传输距离远、速率高、接入方式灵活等特点。文章首先介绍了微波存取全球互通(Worldwide Inter-operability for Microw...微波存取全球互通是一种基于IEEE802.16标准的宽带无线接入技术,是针对微波和毫米波频段提出的一种空中接口标准,具有传输距离远、速率高、接入方式灵活等特点。文章首先介绍了微波存取全球互通(Worldwide Inter-operability for Microwave Access,WIMAX)的基本概念,然后从系统架构、网络安全、应用现状等方面对WIMAX进行了深入的分析,最后针对机动式系统给出了相应的组网方案,该方案更好的提高了机动式系统的通信保障能力。展开更多
基金The National Natural Science Foundation of China(No.60871079)
文摘A modified Benes network is proposed to be used as an optimal shuffle network in worldwide interoperability for microwave access （WiMAX） low density parity check （LDPC） decoders, When the size of the input is not a power of two, the modified Benes network can achieve the most optimal performance. This modified Benes network is non-blocking and can perform any sorts of permutations, so it can support 19 modes specified in the WiMAX system. Furthermore, an efficient algorithm to generate the control signals for all the 2 × 2 switches in this network is derived, which can reduce the hardware complexity and overall latency of the modified Benes network. Synthesis results show that the proposed control signal generator can save 25.4% chip area and the overall network latency can be reduced by 36. 2%.
文摘微波存取全球互通是一种基于IEEE802.16标准的宽带无线接入技术,是针对微波和毫米波频段提出的一种空中接口标准,具有传输距离远、速率高、接入方式灵活等特点。文章首先介绍了微波存取全球互通(Worldwide Inter-operability for Microwave Access,WIMAX)的基本概念,然后从系统架构、网络安全、应用现状等方面对WIMAX进行了深入的分析,最后针对机动式系统给出了相应的组网方案,该方案更好的提高了机动式系统的通信保障能力。
