Keysight MIMO MIMO Cluster n Path n σ n, AoA σ n, AoD Θ n, AoA MS/UE Array Boresight Rx0 Tx0 Θ n, AoD LOS BS Array Boresight Θ n+1, AoA Rx1 Tx1 Path n+1 Cluster n+1
... 3 1. MIMO... 3 1.1 MIMO 1.2 MIMO 1.3 MIMO 2. MIMO... 5 2.1 2.2 Angular Spread 3.... 8 3.1 MIMO-OTA 3.2 3.3 2-3.4 3.5 3.6... 14 2
LTE WiMAX RF MIMO 2006 IEEE802.11n MIMO MIMO MIMO MIMO MIMO 3GPP OTA 1 MIMO 1.1 MIMO MIMO Multi-Input Multi-Output 1 1. 2. 1 2 N N MIMO N MIMO 送信 受信 送信 受信 伝播チャネル 伝播チャネル 推定劣化キャンセル 送信 受信 送信 受信 1 MIMO 3
1.2 MIMO MIMO MIMO -RF RF MIMO MIMO S/N MIMO MIMO MIMO MIMO 2x2 MIMO NxN MIMO 1.3 MIMO MIMO s1 s2 1 2 4 h11~h22 r1,r2 s1,s2 s 1 =d 0, d 2,... h 11 r 1 h 12 d 0,d 1,d 2,d 3`... Tx Rx d 0,d 1,d 2,d 3`... s 2 =d 1, d 3,... h h 21 22 r 2 2 MIMO 1 h11~h22 r1 r2 1 s1 s2 h11~h22 2 s11 s12 r11 r12 s21 s22 r21 r22 2 2 S H LAN WiMAX LTE MIMO MIMO 4
2. MIMO MIMO 2.1 H s1 s2 1 s1 s2 x y 3 H-1 1 3 h 11 s 1 + h 12 s 2 = r 1 s (S 1, S 2 ) 2 h s 21 1 + h 22 s 2 = r 2 s 1 3 MIMO 3 s1 s2 4 h 11 s 1 + h 12 s 2 +n 1 = r 1 s (S 1, S 2 ) 2 h s 21 1 + h 22 s 2 +n 2 = r 2 s 1 4 5
MIMO 2 1 2 2 3 h11=h21 h12=h22 3 2 h11/h12=h21/h22 1 2 2 5 2 5 MIMO 6 0.3 MIMO 理想的な MIMO 通信環境 ノイズ環境下での MIMO 相関環境下での MIMO ノイズと相関環境下での MIMO 5 MIMO ノイズと相関 送信アンテナ間 Correlation=β 受信アンテナ間 Correlation=α h 11 h 12 h h 21 22 Capacity (bps/hz) 10 8 6 4 2 α=0 β=0 α=0.95 β=0 α=0.95 β=0.95 α=0.3 β=0.3 α=1 β=1 Uncorrelated Correlated Loss from Correlations 0 0 2 4 6 8 10 12 14 16 18 20 SNR (db) 6 相関と ノ 6
2.2 Angular Spread 2 2GHz =10cm 0.3 Angular Spread AS AS 7 2 AS AS 35 1 AS 2 10 0.3 MIMO AS AS AS AS MIMO AS アンテナ間相関の絶対値 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 Omni AS=2 Omni AS=5 Omni AS=35 Directive AS=35 AS=2 0.1 AS=35 0 0 2 4 6 8 10 アンテナ間距離 (λ) 7 vs 2 7
3 MIMO MIMO AS LTE HSPA+ MIMO 3GPP 3GPP 3 3.1 MIMO-OTA 8 16 DUT PXB 8 Test Chamber BS Emulator Channel Emulator Anechoic Material MIMO DUT E6621A N5106A Probe Antennas Example 8 antenna configuration Signal Generator BER, FER Power 8 360 8 16 2 8 32 2 16 360 8
3.2 8 N5106A PXB E6621A N5182A MXG E6621A LTE MIMO 9 Parameters Value DL MIMO mode 2 x 2 open loop spatial multiplexing Duplex mode FDD Operating band band 7 (21100, 3100)/band 20 (24300, 6300) Bandwidth DL 10 MHz Number of RBs DL 50 Start RB DL 0 Modulation DL 16 QAM 64 QAM TBS Idx DL 13 (RMC defined) 24 (RMC defined) Bandwidth UL 10 MHz Number of RBs UL 50 Start RB UL 0 Modulation UL QPSK 16 QAM TBS Idx UL 6 (RMC defined) 19 (RMC defined) Transmit power control -10 dbm, open loop Number of HARQ transmissions 1 (no HARQ re-transmissions) AWGN OFF Number of subframes for FOM measurement 2000 minimum for static channel 20000 minimum for faded channel 9 MIMO-OTA N5106A N5106A Channel Model Single-user MIMO ext-in 2x8 Load 10 Fader Setup MIMO Setup Ring of Probes Method Channel Model Power Azimuth Spectrum Laplacian/Gaussian/Uniform 11 Antenna Setup Probe Polarization Single/Dual Probe Constellation Full Circular/Single Cluster Tx Antenna Pattern Omni/Three-Sector/Six-Sector 12 N5182A I/O Port AWGN PXB : Channel Emulator N5106A Digital out Digital in PXT : BS Emulator E6621A Analog out I/O 1 Port A1 in on Analog in I/O 1 Port A2 in on Fader1 Fader2 Fader3 Fader4 Fader5 Fader6 Fader7 Fader8 Fader9 Fader10 Fader11 Fader12 Fader13 Fader14 Fader15 Fader16 I/O 3 Port A1 I/O 4 Port A2 I/O 5 Port B1 I/O 6 Port B2 I/O 7 Port C1 I/O 8 Port C2 I/O 9 Port D1 I/O10 Port D2 MXG1 MXG2 MXG3 MXG4 MXG5 MXG6 MXG7 MXG8 MXG : Signal Generator N5182A 10 MIMO-OTA 9
11 12 N5182A SG N5182A N5106A SG Setting Browser Calibration VNA Vector Network Analyzer Path Loss SG/SA Probe power calibration Channel power calibration 45 Path 13 Signal Generator Reference Antenna enodeb emulator Reference Antenna Channel Spectrum Channel emulator Probe Analyzer emulator A B A Probe B Antennas Antennas Anechoic Chamber Anechoic Chamber Composite loss Spectrum Analyzer Probe Power Calibration Setup Channel Power Calibration Setup 13 10
3.3 2-2- 2 PXB 14 AS - MIMO Test Chamber Stage 1 Antenna pattern measurement BS Emulator E6621A Reference Antenna Anechoic Material MIMO DUT Stage 2 Throughput measurement Channel Emulator PXB Measured pattern BS Emulator E6621A 14 2- Conducted MIMO DUT Antenna Patterns BER, FER, H, R 11
3.4 14 1 N5106A 2x2MIMO E6621A LTE MIMO 9 N5106A N5106A Channel Model Single-user MIMO ext-in 2x2 Load 15 Fader Setup MIMO Setup 2-StageMethod Channel Model Power Azimuth Spectrum Laplacian/Gaussian/Uniform 11 Antenna Setup Tx Antenna Pattern Omni/Three-Sector/Six-Sector Rx Antenna Pattern user specified 16 N5182A I/O Port AWGN PXT : BS Emulator E6621A Analog out Analog in PXB : Channel Emulator N5106A I/O 1 Port A1 in on Fader1 Fader2 Digital out I/O 3 Port B1 Digital in MXG1 MXG : Signal Generator N5182A I/O 1 Port A2 in on Fader3 Fader4 I/O 4 Port B2 MXG2 15 2-16 2-12
N5182A SG N5182A N5106A SG Setting Browser Calibration VNA Vector Network Analyzer Path Loss SG/PM Power calibration reference antenna Antenna Amplitude Phase Chipset calibration Antenna pattern 3.5 3 17 3 反響チャンバ Wall Antennas Mode Stirrer MIMO DUT BS Emulator E6621A Metallic Walls Turntable 3.6 17 E6621A N5106A E6621A LTE MIMO 9 N5106A Fader Setup Doppler frequency AS XPR Delay profile Calibration VNA Vector Network Analyzer fixed antenna wall antenna reference antenna S-parameter stirrer position 13
MIMO MIMO MIMO 2-3 3 MIMO キーサイト テクノロジー合同会社本社 192-8550 東京都八王子市高倉町 9-1 受付時間 9:00-18:00 ( 土 日 祭日を除く ) TEL 0120-421-345 (042-656-7832) FAX 0120-421-678 (042-656-7840) Email contact_japan@keysight.com www.keysight.co.jp Keysight Technologies, 2014 Published in Japan, November 25, 2014 5991-0671JAJP 0000-08cS