【資料名稱】：3GPP LTE系統(tǒng)物理層框架及相關(guān)算法v1[1].1.pdf

【資料作者】：電子科技大學(xué)

【資料日期】：2010.01.01

【資料語言】：中文

【資料格式】：PDF

【資料目錄和簡(jiǎn)介】：


目錄
3GPP LTE系統(tǒng)參數(shù).........................................................................................................1
第一部分上行物理信道(UPLINK).................................................................................4
一、上行物理信道發(fā)送端 ...............................................................................................4
1.1上行物理信道發(fā)送端模型..........................................................................................4
1.2 CRC校驗(yàn)編碼(CRC CODING)......................................................................................4
1.3碼塊分割與碼塊CRC處理(CODE BLOCK SEGMENTATION AND CRC ATTACHMENT)........ 6
1.3信道編碼(CHANNEL CODING) .....................................................................................7
1.3.1TURBO碼...............................................................................................................7
1.3.1.1基于QPP交織器的Turbo編碼................................................................................7
1.3.1.2 QPP交織器...........................................................................................................9
1.3.2速率匹配...............................................................................................................9
1.3.2.1子塊交織器 ........................................................................................................10
1.3.2.2比特收集、篩選和輸出......................................................................................12
1.3.3控制信息的信道編碼(CHANNEL CODING OF CONTROL INFORMATION).................... 13
1.4用戶專有加擾(UE-SPECIFIC SCRAMBLING)...............................................................15
1.5信道交織(CHANNEL INTERLEAVING).........................................................................17
1.6調(diào)制(MODULATION)................................................................................................. 18
1.7 DFT-S-OFDM復(fù)用/SC-FDMA..................................................................................19
1.7.1DFT變換.............................................................................................................19
1.7.2子載波映射(SUB-CARRIER MAPPING)...................................................................20
1.7.3上行參考信號(hào)(UPLINK REFERENCE SIGNAL).........................................................21
1.7.3.1用于解調(diào)的參考信號(hào)(DM RS)............................................................................21
1.7.3.2信道探測(cè)參考信號(hào)(SRS) ....................................................................................23
1.7.3.3上行參考信號(hào)序列設(shè)計(jì)......................................................................................24
1.7.4循環(huán)前綴(CYCLIC PREFIX, CP).............................................................................26
1.7.5SC-FDMA基帶信號(hào) ............................................................................................26
1.8虛擬MIMO技術(shù) ......................................................................................................27
二、上行物理信道接收端 .............................................................................................31
2.1上行物理信道接收端模型........................................................................................31
2.2信道估計(jì)與均衡 ......................................................................................................32
2.2.1 信道估計(jì)..............................................................................................................32
2.2.2 信道均衡..............................................................................................................33
2.3信道譯碼(TURBO并行迭代譯碼) ..............................................................................35
2.3.1 基于QPP內(nèi)交織的TURBO譯碼器結(jié)構(gòu)與原理........................................................35
2.3.2 TURBO譯碼算法(SW-LOG-MAP)............................................................................37
2.3.2.1 Log-MAP(對(duì)數(shù)最大后驗(yàn)概率)算法 ....................................................................37
2.3.2.2 SW-Log-MAP(滑窗對(duì)數(shù)最大后驗(yàn)概率)算法.......................................................38
第二部分 下行物理信道(DOWNLINK) ........................................................................41
一、下行物理信道發(fā)送端..........................................................................................41
1.1下行物理信道發(fā)送端模型 ....................................................................................41
1.2信道專有加擾(TRANSPORT CHANNEL SPECIFIC SCRAMBLING)...................................42
1.2層映射(CODEWORD TO LAYER MAPPING)...............................................................42
1.2.1空間復(fù)用層映射..................................................................................................42