Pusan National University. Suk Chan Kim Communication Systems Laboratory, Dept. Electronics Engineering, PNU

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1 Pusan National University Suk Chan Kim Communication Systems Laboratory, Dept. Electronics Engineering, PNU

2 Introduction IEEE j Overview Technical Issues Performance Evaluation Pusan National University 2

3 Pusan National University 3

4 3G 3.5 G~3.99G WCDMA HSDPA HSPA+ 3GPP LTE EVDO R.0 Wi-Fi OFDM EVDO R.A e OFDMA EVDO R.B WiBro WiMAX e MIMO- OFDMA Pusan National University 4

5 WMAN UWB, BLUETOOTH IEEE IEEE WLAN IEEE Global Wireless Standards Fixed Applications (Licensed/Unlicensed- Non-LOS: < 11GHz & LOS: 10-66GHz) e Fixed and Mobile (Licensed : Non-LOS: < 6GHz) March j MMR Mobile Multi-hop Relay Nov m WiMAX 2 IMT - Advanced Pusan National University 5

6 Pusan National University 6

7 Uniform broadband experience Overcome user throughput dependency on distance-to-bs Mobile multihop relay (MMR): The system function that enables mobile stations to communicate with a base station through intermediate relay stations MMR-base station (MMR-BS): A base station that is compliant with IEEE Std j and IEEE Std e Pusan National University 7

8 Capability of RS (Relay Station) Enhance Throughput & Extend Coverage Simple implementation, low cost Compatible with IEEE e Not just amplify-and-forward (AF), or decode-and-forward (DF) Relay station (RS) Type: Fixed relay station (FRS): Nomadic relay station (NRS): Mobile relay station (MRS): Pusan National University 8

9 Pusan National University 9

10 The usage models I. Fixed Infrastructure Usage Model II. In-Building Coverage Usage Model III. Temporary Coverage Usage Model IV. Coverage on Mobile Vehicle Usage Model Pusan National University 10

11 I. Fixed Infrastructure Usage Model Pusan National University 11

12 II. In-Building Coverage Usage Model Pusan National University 12

13 III. Temporary Coverage Usage Model Pusan National University 13

14 IV. Coverage on Mobile Vehicle Usage Model Pusan National University 14

15 Pusan National University 15

16 DL Sub-frame Frame k Frame k+1 UL Sub-frame MR-BS MS/RS Optional Transparent UL Access UL Relay Zone TTG Zone Zone RTG MR-B BS Frame Preamble FCH DL MAP UL MAP UL MAP Optional R-MAP Ranging subchannel Frame k DL Sub-frame UL Sub-frame MR-BS MS/RS Optional Transparent UL Access UL Relay Zone Zone Zone TTG RTG Frame k+1 RS Fram me Synchroniz zation Recei ving Recei ving Recei ving Recei ving Relay RTG Relay RTG Pusan National University 16

17 Pusan National University 17

18 Click to add text MR-BS1 MR-BS MR-BS MR-BS2 RS MR-BS MR-BS RS RS MR-BS MR-BS RS RS RS RS RS RS RS RS RS Pusan National University 18

19 Original signal is received by several RSs, and forwarded to the destination through different paths Allowing a set of multiple signal sources to transmit correlated data Achieve cooperative diversity gain to improve the performance of the relay network Pusan National University 19

20 Cooperative source diversity Multiple signal sources simultaneously transmit the same signal using the same time-frequency resource Pusan National University 20

21 Cooperative transmit diversity Uses space-time block codes across different physical signal sources This method is based on the use of transmit diversity using STBCs The received signal from different sources are different, each signal source playing the role of different transmit antenna in the conventional STC Pusan National University 21

22 Cooperative hybrid diversity The two cooperative relaying schemes can be combined If the number of signal sources are greater than the number M in a Mx1 STBC scheme, multiple signal source transmit the same STBC encoded signal Pusan National University 22

23 Better BER performance Pusan National University 23

24 Link robustness VS Not Survived One path survived Pusan National University 24

25 BW request Network Entry Security Construction & transmission of MAC PDUs Measurement & reporting Mobility management Routing, path, connection & service flow management RRM, scheduling & interference control HARQ Pusan National University 25

26 Pusan National University 26

27 Multi-hop Relay System Evaluation Methodology Simulation Overview Pusan National University 27

28 Category Type A Type B Type C Description Macro-cell suburban, ART to BRT for hilly terrain with moderate-to-heavy tree densities. Macro-cell suburban, ART to BRT for intermediate path-loss condition. Macro-cell suburban, ART to BRT for flat terrain with light tree densities. LOS/NLOS LOS/NLOS LOS/NLOS Type D Macro-cell suburban, ART to ART LOS Type E Macro-cell, urban, ART to BRT NLOS Type F Urban or suburban, BRT to BRT. LOS NLOS Type G Indoor Office LOS/NLOS Type H Macro-cell, urban, ART to ART LOS Type J Outdoor to indoor NLOS Pusan National University 28

29 The level of shadow fading (in db) is usually simulated by dropping a normal distributed random variable, this refers to typical log-normal shadow fading model Standard deviation of the shadowing The typical values based on WINNER models of the standard deviation for lognormal shadowing Pusan National University 29

Throughput Enhancement 2 1.8 WiBro 1500 1.6 WiBro 1.

8 WiBro 1 RS : 600/1500, Trans 1.6 WiBro MMR 1.4 1.

30 Throughput Enhancement WiBro WiBro WiBro 1 RS : 600/1500, Trans 1.6 WiBro MMR Pusan National University 30

Coverage Extension 2 1.8 WiBro 1500 1.6 WiBro 1.4 1.2 1 0.

8 WiBro 2 RS : 800,1200,1600/2000 1.6 WiBro MMR 1.4 1.

31 Coverage Extension WiBro WiBro WiBro 2 RS : 800,1200,1600/ WiBro MMR Pusan National University 31

32 Cooperative relay under SUI 2(LOS) Cooperative relay under SUI 4(NLOS) with correlated shadow model with correlated shadow model BLER Single 0deg 30deg 60deg 90deg 120deg 150deg 180deg BLER 10-1 Single 0deg 30deg 60deg 90deg 120deg 150deg 180deg E s /N o E s /N o Pusan National University 32

33 Suk Chan Kim Pusan National University, Electronic, Electrical and Communication Engineering Communication Systems Laboratory, Pusan National University

CHAPTER 7 APPLICATION OF 128 POINT FFT PROCESSOR FOR MIMO OFDM SYSTEMS. Table of Contents

88 CHAPTER 7 APPLICATION OF 128 POINT FFT PROCESSOR FOR MIMO OFDM SYSTEMS Table of Contents Page No. 7.0 APPLICATION OF 128 POINT FFT PROCESSOR FOR MIMO OFDM SYSTEMS 89 7.1 Introduction 89 7.2 Types of