【资料名称】：Essentials of LTE and LTE-A

【资料作者】：Essentials of LTE and LTE-A

【资料日期】：2011

【资料语言】：英文

【资料格式】：PDF

【资料目录和简介】：

1 Genesis of wireless broadband technology (from 2G
to 4.5G) 1
1.1 Genesis of wireless technology 1
1.2 Key drivers for 4G/4.5G wireless broadband 4
1.3 Radio spectrum for wireless broadband 8
References 9
Additional reading 9
2 LTE overview 10
2.1 Introduction 10
2.2 System architecture 12
2.2.1 E-UTRAN 14
2.2.2 Evolved packet core 16
2.2.3 User equipment 18
2.3 Transmission scheme 20
2.3.1 OFDMA 20
2.3.2 SC-FDMA 25
References 30
3 Downlink transmission and system performance 33
3.1 Introduction 33
3.2 Mapping between transport and physical channels 34
3.3 LTE downlink frame structure 35
3.4 Data transmission 42
3.4.1 Shared data channel 42
3.4.2 Multimedia broadcast multicast service 48
3.5 Control signaling 50
vii
3.5.1 Physical Downlink Control Channel 50
3.5.2 Physical Control Format Indicator
Channel 55
3.5.3 Physical HARQ Indicator Channel 56
3.5.4 Physical Broadcast Channel 59
3.5.5 Paging Control Channel 62
3.6 Downlink reference signal 63
3.7 Synchronization signals 67
3.7.1 Cell search and synchronization sequences 68
3.8 Performance results 69
3.8.1 Link-level performance 69
3.8.2 System-level performance 70
3.9 Rel-8 interference coordination schemes 72
3.10 LTE FDD vs. TDD comparison 74
References 74
4 Uplink transmission and system performance 77
4.1 Introduction 77
4.2 Transmission scheme and frame structure 77
4.3 Data channel 80
4.3.1 Dynamic uplink scheduling assignment 82
4.3.2 Semi-persistent uplink scheduling
assignment 85
4.3.3 Subframe bundling 87
4.3.4 HARQ processes 87
4.4 Control information 90
4.4.1 ACK/NACK and scheduling request 92
4.4.2 Channel measurement report–CQI/PMI/RI 97
4.5 Reference signals 108
4.5.1 Demodulation reference signal 110
4.5.2 Sounding reference signal 110
4.6 Random access 114
4.6.1 Random-access procedure 118
4.7 Timing advance 119
viii contents
4.8 Power control 122
4.8.1 Data channel 122
4.8.2 Control channels 125
4.8.3 Random-access channel 126
4.8.4 Sounding reference signal 126
4.9 Interference coordination schemes 126
4.10 Performance results 128
4.10.1 Link-level performance 128
4.10.2 System-level performance 132
References 137
5 MIMO 139
5.1 Introduction 139
5.2 Downlink multi-antenna techniques 139
5.2.1 Transmission mode 2: transmit diversity 142
5.2.2 Transmission mode 3: precoder-based
open-loop spatial multiplexing 142
5.2.3 Transmission modes 4 and 6: closed-loop
spatial multiplexing (single-user MIMO) 143
5.2.4 Transmission mode 5: multi-user MIMO 144
5.2.5 Transmission mode 7: UE-specific
reference-symbol-based beamforming 145
5.2.6 System performance of LTE Rel-8
multiple-antenna schemes 147
5.3 Uplink multi-antenna techniques 152
References 157
6 LTE-Advanced 160
6.1 Introduction 160
6.2 Carrier aggregation 161
6.2.1 Data transmission 167
6.2.2 Control signaling 169
6.3 Downlink multi-antenna transmission 176
6.3.1 LTE Rel-9 downlink spatial multiplexing 177
6.3.2 LTE Rel-10 downlink spatial multiplexing 180
6.3.3 Coordinated multi-point transmission 183
contents ix
6.4 Uplink multi-antenna transmission 184
6.4.1 Control channels 186
6.4.2 Random-access channel 189
6.4.3 Data channel 190
6.4.4 Coordinated multi-point reception 195
6.5 Heterogeneous network 200
6.5.1 Heterogeneous network overview 201
6.5.2 Indoor distributed-antenna system 202
6.5.3 In-band relays 205
6.5.4 Pico- and femto-cell underlay 210
6.5.5 Interference-management techniques
for heterogeneous network 212
6.6 Miscellaneous 216
6.6.1 Non-contiguous uplink transmission 216
6.6.2 Aperiodic SRS 218
References 218
Additional reading 220
7 Comparison of broadband technologies 222
7.1 Introduction 222
7.2 Feature comparison of wireless broadband
technologies 222
7.3 Performance comparison of LTE/LTE-A and
WiMAX/802.16m 227
7.4 Migration and co-existence scenarios 232
Additional reading 236
Appendix 238
A.1 System analysis and performance metrics 238
A.2 Abbre