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›› 2013,Vol. 28 ›› Issue (3): 420-428.doi: 10.1007/s11390-013-1343-3
• Special Section on Selected Paper from NPC 2011 • 上一篇 下一篇
Xiao-Feng Tao1 (陶小峰), Yan-Zhao Hou1 (侯延昭), Kai-Dong Wang1 (王凯栋), Hai-Yang He1 (何海洋) and Y. Jay Guo2 (郭英杰)
Xiao-Feng Tao1 (陶小峰), Yan-Zhao Hou1 (侯延昭), Kai-Dong Wang1 (王凯栋), Hai-Yang He1 (何海洋), and Y. Jay Guo2 (郭英杰)
通常认为,传统的基站由诸如FPGA、DSP等硬件单元组成。硬件实现方式可以为移动用户提供可靠顺畅的服务。但是,随着无线网络的快速发展,人们对无线网络的能耗提出了较高的需求。因此,提出低功耗高灵活性的基站实现方式迫在眉睫。当前,通用处理器(GPP)以其成本低灵活性高的特点吸引了人们的关注。受益于现代GPP技术的飞速发展,诸如多核、SIMD指令集、大容量片上缓存、高速率I/O等,GPP目前能够实现无线通信中中的高密度数字信号处理工作。在这篇文章中,我们比较了不同的软件定义的无线电系统,进而提出了基于GPP架构的软基站体系结构。进一步的,我们分析了软基站中的资源分配和算法优化。基于上述研究,我们设计并实现了参考3GPP LTE标准的软基站原型样机。据我们所知,这是目前首个软LTE原型样机。最后,我们评测了软基站的时钟定时性能并获得了低于0.003的丢包率。
[1] Fettweis G, Zimmermann E. ICT energy consumption——Trends and challenges. In Proc. the 11th Int. Symp. Wireless Personal Multimedia Commun., September 2008, pp.4-6.[2] Tao X F, Xu X D, Cui Q M. An overview of cooperative communications. IEEE Communication Magazine, 2012, 50(6): 65-71.[3] Gudaitis M S, Hinman R D. Tactical software radio concept. In Proc. MILCOM1997, November 1997, Vol.3, pp.12071211.[4] Mitola J. Software radio architecture: A mathematical perspective. IEEE Journal on Selected Areas in Communications, 1999, 17(4): 514-538.[5] Muir S, Yedetore J, Stich L, Chapin J. Integration of SDR cellular basestations into military telephone networks. In Proc. 2007 Military Communications Conference, October 2007, pp.1-7.[6] Kaltenberger F, Ghaffar R, Knopp R, Anouar H, Bonnet C. Design and implementation of a single-frequency mesh network using OpenAirInterface. EURASIP Journal on Wireless Communications and Networking, 2010, 2010: Article No.19.[7] Zhao S J, Shen C, Su X, Yao Y. Architecture of a software radio system based on cluster of workstations. In Proc. IEEE TENCON 2003, October 2003, Vol.4, pp.1439-1444.[8] Murphy P, Hunter C, Sabharwal A. Design of a cooperative OFDM transceiver. In Proc. the 43th Asilomar Conference on Signals, Systems and Computers, November 2009, pp.1263-1267.[9] Hunter C, Camp J, Murphy P, Sabharwal A, Dick C. A flexible framework for wireless medium access protocols. In Proc. the 40th Asilomar Conference on Signals, Systems and Computers, November 2006, pp.2046-2050.[10] Pulley D, Baines R. Software defined baseband processing for 3G base stations. In Proc. the 4th International Conference on 3G Mobile Communication Technologies, June 2003, pp.123-127.[11] Huang L, Zheng K, Wang X Y, Decarreau G. Timing performance analysis in an open software radio system. In Proc. the 1st International Conference on Communications and Networking in China, October 2006, pp.1-5.[12] Lin Y, Lee H, Woh M et al. Soda: A low-power architecture for software radio. In Proc. the 33rd International Symposium on Computer Architecture, June 2006, pp.89-101.[13] Tan K, Zhang J S, Fang J, He L, Ye Y S, Wang S, Zhang Y G, Wu H T, Wang W, Voelker G M. Sora: High performance software radio using general purpose multi-core processors. Communications of the ACM, 2011, 54(1): 99-107.[14] Horrein P H, Hennebert C, P?etrot F. Adapting a SDR environment to GPU architectures. In Proc. SDR11WInnComm-Europe Conference, June 2011, pp.143-149.[15] Schiphorst R, Hoeksema F, Arkesteijn V, Slump K, Klumperink E, Nauta B. A GPP-based software-defined radio front-end for WLAN standards. In Proc. IEEE Benelux Signal Processing Symposium, April 2004, pp.203-206.[16] Tao X F, Wang K D, He H Y, Hou Y Z, Han J. A compensation scheme for timing synchronization error in GPP-SDR LTE system. In Proc. the 1st International Conference on Communications in China, August 2012, pp.339-344.[17] Lin Y H, Shao L, Zhu Z B,Wang Q H, Sabhikhi R K. Wireless network cloud: Architecture and system requirements. IBM Journal of Research and Development, 2010, 54(1): 38-49.[18] Erfanian J, Pasupathy S, Gulak G. Reduced complexity symbol detectors with parallel structure for ISI channels. IEEE Transactions on Communications, 1994, 42(234): 1661-1671.[19] Schmidl T M, Cox D C. Robust frequency and timing synchronization for OFDM. IEEE Transactions on Communications, 1997, 45(12): 16131621. |
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