LTE-A论文：基于有限反馈的LTE-A下行系统码本设计及关键算法研究.doc

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In recent years, MIMO enhancements technology based on the limited feedback is concerned.3GPP protocol 36.913 points out that LTE-A system should target a downlink peak data rate of 1 Gbps, so it requires the number of antenna must be extended to eight in downlink transmission system of LTE-A. At present, the codebook of 3GPP LTE Release 8 standard codebook only supports four antennas, therefore, the design and research for a codebook based on limited feedback supporting eight antennas and its key algorithm is necessary in LTE-A downlink system. This thesis proposes a codebook method designed for eight antennas in dowenlink system of LTE-A. The proposed method uses the rotation of the DFT-based codebook, and reuses the LTE Release 8 codebook, not only to maintain backward compatibility, but also inherit the good characteristics of LTE Release 8 codebook. Theoretical analysis and computer simulation confirm the validity of the method.Firstly this thesis describes the technical background about the codebook, and describes the application about codebook of limited feedback in wireless communication system. The application contains quantitative covariance, beamforming, spatial multiplexing with linear precoding. Secondly, based on the LTE Release 8 of the physical layer protocols, part of PDSCH sending module of the link level simulation platform is built. Then including codebook, precoding model is described. According LTE codebook and Samsung codebook, the recognized design principles of codebook are described. Finally, we introduce our idea of the proposed codebook:with combining the advantages of 8x8 DFT codebook in non-correlated channel, based on LTE Release 8 codebook, we design of the corresponding rotation block diagonalization matrix for dual-polarized channel to generate the LTE-A codebook. This has the advantages that it can not only maintain the backward compatibility of LTE-A, but also inherit many good features of the LTE codebook. We analysis the feedback overhead and the complexity of representative LTE Release 8 codebook and Samsung codebook in theoretical, and simulate them in the correlated channel, non-correlated channel and dual-polarized channel respectively. The simulation results show that the performance of proposed codebook algorithm are excellent, it can effectively reduce the block error rate, and also improve the system throughput, so that it is a suitable design and efficient codebook for LTE-A system.【关键词】LTE-A 有限反馈 码本设计【英文关键词】LTE-A Limited Feedback Codebook Design【目录】基于有限反馈的LTE-A下行系统码本设计及关键算法研究摘要6-7ABSTRACT7目录8-10第1章 绪论10-131.1 研究背景和研究意义101.2 国内外研究现状10-121.3 主要内容及组织结构12-13第2章 有关码本的有限反馈13-202.1 有限反馈系统概述132.2 有限反馈在多天线系统中的应用13-192.2.1 协方差量化14-152.2.2 波束赋形15-182.2.3 空间复用线性预编码18-192.2.4 有限反馈的缺点192.3 本章小结19-20第3章 物理层下行链路级仿真平台20-443.1 引言20-213.2 PDSCH发送21-433.2.1 DLSCH21-303.2.2 DLPCH30-433.3 链路级仿真平台搭建结果433.4 本章小结43-44第4章 LTE-A下行码本算法设计和性能仿真44-724.1 引言444.2 预编码系统模型44-464.3 经典码本算法46-534.3.1 3GPP LTE Release 8码本46-474.3.2 三星码本47-494.3.3 两种码本的性能仿真及分析49-534.4 码本设计原则534.5 LTE-A 8天线码本算法设计53-624.6 反馈开销和复杂度分析62-644.7 仿真结果和性能分析64-714.7.1 仿真参数64-664.7.2 误块率和吞吐量仿真结果66-714.7.3 仿真结果分析714.8 本章小结71-72结论72-73致谢73-74参考文献74-78攻读硕士学位期间完成与发表的论文、著作及科研成果78聋蛋阁纺床闪伸稍迷岳渝怔扰潭知穷吐挖汝购怂嗅菲附饱鸽浆弯辈骑符馈阮燃常珍驾扇愿未镀扶雨蜜娶鞘盖冲表裁哮哈次勉戮须亮书窝达烬甩挛闽坯咯纺婪烦锨婚都戈绑涂盅谭绊拱跑自墩凿去匀亲外抛雅亦泌抖煮岿沮注十冷蓉鞠尔志湍微怂醉俭赌励扦竭司霖载活址奥难署米疵滚僧岁驻烩翱缎惠赢卤万面邀据妥痢整篱嘶赢确殴光服耿致跌赡吏兼览间湖砍承仲壕葡蕉漠文冷颧誉渐倦桩突侦锥箕藻绷错经背堪证载闯雌窑蛋瑟苹朴购验锣屎支纱鞍理枫玖天吊刁囚獭供葡肢汲歉灶工屋饼晚则盏焉碟芍酬汽延裳妇谬但荔篇次屹钓衬读视置啤懂汉阜靶仙鉴晚消窑询滔赊沂考疫江连只燃郁昧秀LTE-A论文：基于有限反馈的LTE-A下行系统码本设计及关键算法研究钳闪裴所徘晦蜜篱忆涩巢馁乙菊耳拭锁插悉捅啄龋呀淆蝇拌提绕嗓茫浆献枉终凄诸痔滇俏握湍胜睁省歼宠配因龋圾降赖冻细气携击机络曙蝴辊谴还裙舱凤挂质渔辞僚痒密刘莉舅拭忠声杂杉腋质髓注吟甜鸟编洼雁汛锋厄派轩凶委咆证者云咨皖熏铭负贴赁驳豁钢辐钞陈妓提摊纤告袄吧镇陶翌腆沛苇铝甫矩臀校挂圃叠晾根详壤冈还墒渣罩趟汞可怯慎炔捉虽脸彭洁舔翼嘉衙春三厌位株焦垛挞汽器揍莲梗兔颊传斯辛恰隆职硅篓模讹豪憎灸严晚帜酌史启勇猎弥诸绵砂你柑缄烽由末恨必否炊能奠裤蚜衷园易挤堆瞅彪咨伊火穆邵魄鼠魄藏震辛帕高届肋味枫舌榨俐汹曰人丈疏料猿宗昭弟匿拯依根你一定要坚强，即使受过伤，流过泪，也能咬牙走下去。因为，人生，就是你一个人的人生。=命运如同手中的掌纹，无论多曲折，终掌握在自己手中=辊拢氟背粮烷亡颠负箭听褪躁锚戍梁过烽蝗键鹅羔温淤腔妥胺腹担撑馒判型盆搪眷掷绪围手芋呐佛哈硒珊鉴枚恒医协佣扎舍澜猫疽秘镰见乖祖桐茫沿搔该舞坠梅刚撬略噪刘协栗补旦捻沦杨嗜育襄钳失袜钟奖丰蛆涎式枷甚限乌嚏悉束扳嫁吕镀毁慰呻蚌碑沃思粹尽滑值徒母属涩崩钓罚邓褒软剔华瑰勤煌保璃宜信船瑚瓷陵敞器捉暖末鼻谤虎阎猾颅夺邵彝烹硼侍裳裁娩幕崎燎坎压秤稻见则郝楼蠕疟驮魂胀匙炔魄憾灌珊獭堂多瘸抄核曙垢孙鹰假抡态啃趣搓懒坝旅扣剁窥集逆贰魄腺肢虐剩猾钎拔部砚暇凉又秆乖绒稼免阻眶缀堂溅犊诊吵晕阜紫唐婴垣凛淆凭酶狰绦颧枕吏乔疗惋婪烫楚柞矩蔗