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一种改进的组间互补码及其性能分析
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作者 牛红霞 黄文准 王永生 《计算机工程》 CAS CSCD 北大核心 2011年第12期273-275,278,共4页
在分析组间互补码、零相关区正交互补码的基础上,构造一种适合于多进制正交码扩频系统或准同步CDMA系统的正交码集――改进的组间互补码。通过理论分析与性能仿真表明,改进的组间互补码的集合数量多于组间互补码;零相关区长度大于组内... 在分析组间互补码、零相关区正交互补码的基础上,构造一种适合于多进制正交码扩频系统或准同步CDMA系统的正交码集――改进的组间互补码。通过理论分析与性能仿真表明,改进的组间互补码的集合数量多于组间互补码;零相关区长度大于组内组间互补码,但比组间的组间互补码小;在相同码长条件下,改进的组间互补码的自相关特性优于组间互补码,互相关特性与组间互补码相当。 展开更多
关键词 正交码扩频 改进的组间互补码 MATLAB仿真 零相关区码 广义正交码
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ALGORITHMS AND ARCHITECTURE IMPLEMENTATIONS OF MIMO OFDM BASEBAND RECEIVER BASED ON THE SIMD DSP CORE 被引量:1
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作者 Hao Xuefei Chen Jie +1 位作者 Zhao Danfeng Zhou Chaoxian 《Journal of Electronics(China)》 2006年第5期763-768,共6页
This letter presents a programmable single-chip architecture for Multi-lnput and Multi-Output (M1MO) OFDM baseband receiver. The architecture comprises a Single Instruction Multiple Data (SIMD) DSP core and three ... This letter presents a programmable single-chip architecture for Multi-lnput and Multi-Output (M1MO) OFDM baseband receiver. The architecture comprises a Single Instruction Multiple Data (SIMD) DSP core and three coprocessors that are used for synchronization, FFT and channel decoder. In this MIMO OFDM system, the Zero Correlation Zone (ZCZ) code is used as the synchronization word preamble of packet in the physical layer in order to avoid the interference from other transmitting antennas. Furthermore, a simple channel estimation algorithm is proposed which is appropriate tbr the SIMD DSP computation. 展开更多
关键词 Multi-Input and Multi-Output (MIMO) OFDM Baseband receiver Zero Correlation Zone (ZCZ) code Single Instruction Multiple Data (SIMD) DSP
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