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电子学报  2007 

一种基于线性星座预编码和坐标交织的空时频发射方案

, PP. 98-103

Keywords: 空时频编码,正交频分复用,分集,空时码

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Abstract:

为获得存在多径衰落的MIMO-OFDM系统中高速率传输方案,给出了一种基于线形星座预编码和坐标交织的速率为1的简单空时频分组码.该传输方案通过线性星座预编码来获得频率分集增益,通过坐标交织变换来获得传输速率为1,且能适当改善系统的误码性能.仿真结果表明,与传统的结合空时码的OFDM系统相比,该方案能获得更大的分集增益、更高的频谱效率和更好的误码性能.在误码率为10-2的未加信道编码的条件,本文方案与传统方案相比,至少能够提供约4dB的性能增益.若在接收端采用MMSE等线性接收方案,本文方案的计算复杂度并没有明显的增加.

References

[1]  V Tarokh,H Jafarkhani,A R Calderbank.Space-time codes for high data rate wireless communication:Performance criterion and code construction[J].IEEE Transaction on Information Theory,1998,44(2):744-765.
[2]  K F Lee,D B Williams.A space-time coded transmitter diversity technique for frequency selective fading channel[A].Proc IEEE Sensor Array and Multichannel Signal Processing Workshop[C].Cambridge:Academic Press,2000,3.149-152.
[3]  Liu Z,Xin Yan,Giannakis G B.Space-time-frequency coded OFDM over frequency-selective fading channels[J].IEEE Transaction on Signal Processing,2002,50(10):2465-2476.
[4]  Kenji Suto,Tomoaki Ohtsuki.Performance evaluation of spacetime-frequency block codes over frequency selective fading channels[A].IEEE Vehicular Technology Conference[C].Vancouver:Academic Press,2002.1446-1470.
[5]  S Siwamogsatham,M P Fitz,J Grimm.A new view of performance analysis of transmit diversity schemes in correlated Rayleigh fading[J].IEEE Transaction on Information Theory,2002,48(4):950-956.
[6]  S M Alamouti.A simple transmit diversity technique for wireless communications[J].IEEE J Select Areas in Commun,1998,16(8):1451-1458.
[7]  Vahid Tarokh,Hamid Jafarkhani,A Robert Calderbank.Spacetime block codes from orthogonal designs[J].IEEE Transactions on Information Theory,1999,45(5):1456-1467.
[8]  K F Lee,D B Williams.A space-frequency transmitter diversity technique for OFDM systems[A].Proc IEEE GLOBECOM[C].San Francisco(CA):Academic Press,2000,3.1473-1477.
[9]  Palomar D P,Ciofffi J M,Lagunas M A.Joint Tx-Rx beamforming design for multicarrier MIMO channel:A unified framework for convex optimization[J].IEEE Trans on Signal Processing,2003,51(9):2381-2401.
[10]  Berry M W,Dumais S T,O''Brien G W.Using linear algebra for intelligent information retrieval[J].SIAM Review,1995,37(4):573-595.
[11]  屈代明,朱光喜,桂波.基于LCP预编码的VBLAST-OFDM系统[J].华中科技大学学报,2004,32(4):83-86.Qu Daiming,Zhu Guangxi,Gui Bo.The system for VBLAT-OFDM based on LCP precoding[J].Journal of Huazhong University of Science and Technology,2004,32(4):83-86.

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