logging in or signing up SPACE-DIVISION MULTIPLE ACCESSES gurujd Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 740 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: June 05, 2010 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: gurujd (21 month(s) ago) guru.jd@gmail.com . You can contact m any time. Please mail me in detail about your queries. Will revert you soon. Thank you Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: SPACE-DIVISION MULTIPLE ACCESSES ………BEST-WINE Seminar Objectives : Seminar Objectives To gain an understanding on SDMA mobile radio communications for… Wireless Broadband ……… High Throughput……… At Higher Mobility………… Under the Guidance of: : Under the Guidance of: Mrs. Rajeshwari (Associate Prof. Dept of E&C) HEMAL PATEL BHOOMIN DESAI J D GURUMURTHY YP KESHAV 8th semester Dept. of electronics & communication Acharya Institute of Technology OVERVIEW : OVERVIEW Historical Review Wireless Roadmap BEST-WINE Technology Proposal Overview BEST-WINE Proposal Overview & IEEE 802.20 Specifications BEST-WINE SYSTEM OVERVIEW Layered Protocol Architecture BEST-WINE Base Specification Overview Channel Spacing Frame Structure Adaptive Antenna Concept Simulation Results Throughput at various ModClasses Base Station Architecture Applications Developments Conclusion Historical Review (1) : Historical Review (1) 2.5G Data service: the data rate of 2G is low New standard: a long time replacing 2G systems with 3G System 3G systems: huge amount of investment on 2G Solution: 2.5G, based on the existing 2G systems, increase the data rate Standards: GPRS (up to 114kbps; for GSM networks), EDGE (up to 384kbps; for GSM and DCS-1800/1900 networks), IS-95B (IS-95’s data-transmission extension) Historical Review (2) : Historical Review (2) 2000’s: 3G (3rd generation mobile communication systems) Feature 1: Initially intended to support multimedia communications; Currently targeted to support Internet access, mobile TV, games etc – Feature 2: Employs all sorts of capacity enhancement techniques: turbo codes (invented in 1993), multiuser detection (invented in 1986), transmit diversity (invented in ~1993), fast power control (invented in ~1993), smart antennas (long-known technique). Historical Review (3) : Historical Review (3) – Data-transmission rate: from 144kbps (vehicular environments) to 2Mbps (indoor environments) – Market status: CDMA2000 first commercial service at Seoul in late 2000 and WCDMA in Tokyo in May 2001 Wireless Roadmap : 8 Fixed Local Area Wide Area Wireless Roadmap Broadband Narrowband User Speed in practice Mobility IEEE 802.16 (WiMax) LTE BEST-WINE Technology Proposal Overview : BEST-WINE Technology Proposal Overview High Spectral Efficiency (Bits/Sec/Hz/Sector) = 9.78 with Spatial Channels Improved Coverage Greater Capacity by handling more than 100 Active sessions per sector Reduced Spectrum Requirements IP Handover Security Authentication Encryption BEST-WINE Proposal Overview& IEEE 802.20 Specifications : BEST-WINE Proposal Overview& IEEE 802.20 Specifications AAA Processing and SDMA with 4 Spatial Channel in Typical Deployment Base Station 9 /12 Antennas User Terminal with 4/2/1 Antennas 625 KHz Channel and 16 Channel Aggregation Fixed Symbol Duration of 2us & Symbol Rate -500kspsec. TDMA-TDD Frame of 5ms 10 Modulation and Coding Modes BEST-WINE SYSTEM OVERVIEW : BEST-WINE SYSTEM OVERVIEW Highest Spectral Efficiency Adaptive Antenna Array Space Division Multiple Access Link Adaptation & Adaptive Modulation & Coding Power Control BEST-WINE Layered Protocol Architecture : BEST-WINE Layered Protocol Architecture BEST-WINE Base Specification Overview : BEST-WINE Base Specification Overview SDMA CONCEPT : SDMA CONCEPT BEAM DISTRIBUTION : BEAM DISTRIBUTION DIGITAL BEAM FORMING ARRAY : DIGITAL BEAM FORMING ARRAY Total independent channels Channel Bandwidth Limited -DSP speed related to bandwidth Allows Distributed Power Very good Interference Rejection -channel nulls. DIGITAL BEAM FORMING ARRAY : DIGITAL BEAM FORMING ARRAY FREQUENCY SCANNED ARRAY : FREQUENCY SCANNED ARRAY Slide 19: Employs Frequency Tracking mobiles -Radio chooses the Optimal band Improves the Range -High gained frequency antennas are easily constructed Adaptive Nulling through Frequency channel selection -Each direction corresponds to a frequency Best used in Wide Band systems FREQUENCY SCANNED : FREQUENCY SCANNED Channel Spacing : Channel Spacing Spectral allocation is divided into one or more RF channels of bandwidth 625 kHz each RF channels are divided into 5 ms frames Frame Structure : Frame Structure Transmission Channel Block Diagram : Transmission Channel Block Diagram PREAMBLE AND FACH SIGNALS : PREAMBLE AND FACH SIGNALS Modulation and Coding Rates : Modulation and Coding Rates Smart Antenna Concept : 26 RF PHY MAC Single Input Single Output (SISO) Antenna Configuration FUTURE Multiple Input Multiple Output (MIMO) Antenna Configuration “N” element antenna array Integrated RF chains Signal Processing Algorithm Engine TODAY RF Strategy #1: Raise the Theoretical Channel Capacity Smart Antenna Concept Bps/Hz Analog Digital PHY PHY Implementation: Base Station Architecture : Implementation: Base Station Architecture Simulation Results : Simulation Results Simulation configuration parameters: Beam forming : Beam forming User 1 @ AOA 30degree user 2 @ AoA 10degree user 3 @ AoA 50deg user 4 @ AoA 20deg Beam formed for different Users at different AOA at 3db SNR with ModClass 5 Slide 30: DATA TRANSMISSION OF USER1 WITH MODCLASS 5 AND DIFFERENT SNRS Equalized Data at 25dB SNR Equalized Data at 15dB SNR Equalized Data at 10dB SNR Throughput at various ModClasses : Throughput at various ModClasses Application : Application Green Base station Best suited for VoIP & SIP Telephonic conference even at high mobility VoD Provides high definition quality for Telemetric operations Mobile TV Online Gaming High Speed internet at low Bandwidth Benefits : Benefits Increases the coverage area 12.4 kms Saves power hence …….. Green Base Station Very less Bandwidth is required 5Mhz 2000 Users can be registered at a given time System spectrum efficiency is good Cell capacity throughput is 10MHz Size of the base station is small compared to others. Provides Mobility up to 250KM/Hr Developments : Developments Need to save more power, currently each Base station is consuming 800 MW to 1070 MWS Need to achieve higher data rate above 300Mbps Should support higher mobility above 350KM/hr Slide 35: Conclusion ~4x improvement! 4 b/hz to 16 b/hz (Theoretical) Slide 36: THANK YOU A Complete and Fully Compliant TDD Technology For IEEE 802.20: MBWA You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
SPACE-DIVISION MULTIPLE ACCESSES gurujd Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 740 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: June 05, 2010 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: gurujd (21 month(s) ago) guru.jd@gmail.com . You can contact m any time. Please mail me in detail about your queries. Will revert you soon. Thank you Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: SPACE-DIVISION MULTIPLE ACCESSES ………BEST-WINE Seminar Objectives : Seminar Objectives To gain an understanding on SDMA mobile radio communications for… Wireless Broadband ……… High Throughput……… At Higher Mobility………… Under the Guidance of: : Under the Guidance of: Mrs. Rajeshwari (Associate Prof. Dept of E&C) HEMAL PATEL BHOOMIN DESAI J D GURUMURTHY YP KESHAV 8th semester Dept. of electronics & communication Acharya Institute of Technology OVERVIEW : OVERVIEW Historical Review Wireless Roadmap BEST-WINE Technology Proposal Overview BEST-WINE Proposal Overview & IEEE 802.20 Specifications BEST-WINE SYSTEM OVERVIEW Layered Protocol Architecture BEST-WINE Base Specification Overview Channel Spacing Frame Structure Adaptive Antenna Concept Simulation Results Throughput at various ModClasses Base Station Architecture Applications Developments Conclusion Historical Review (1) : Historical Review (1) 2.5G Data service: the data rate of 2G is low New standard: a long time replacing 2G systems with 3G System 3G systems: huge amount of investment on 2G Solution: 2.5G, based on the existing 2G systems, increase the data rate Standards: GPRS (up to 114kbps; for GSM networks), EDGE (up to 384kbps; for GSM and DCS-1800/1900 networks), IS-95B (IS-95’s data-transmission extension) Historical Review (2) : Historical Review (2) 2000’s: 3G (3rd generation mobile communication systems) Feature 1: Initially intended to support multimedia communications; Currently targeted to support Internet access, mobile TV, games etc – Feature 2: Employs all sorts of capacity enhancement techniques: turbo codes (invented in 1993), multiuser detection (invented in 1986), transmit diversity (invented in ~1993), fast power control (invented in ~1993), smart antennas (long-known technique). Historical Review (3) : Historical Review (3) – Data-transmission rate: from 144kbps (vehicular environments) to 2Mbps (indoor environments) – Market status: CDMA2000 first commercial service at Seoul in late 2000 and WCDMA in Tokyo in May 2001 Wireless Roadmap : 8 Fixed Local Area Wide Area Wireless Roadmap Broadband Narrowband User Speed in practice Mobility IEEE 802.16 (WiMax) LTE BEST-WINE Technology Proposal Overview : BEST-WINE Technology Proposal Overview High Spectral Efficiency (Bits/Sec/Hz/Sector) = 9.78 with Spatial Channels Improved Coverage Greater Capacity by handling more than 100 Active sessions per sector Reduced Spectrum Requirements IP Handover Security Authentication Encryption BEST-WINE Proposal Overview& IEEE 802.20 Specifications : BEST-WINE Proposal Overview& IEEE 802.20 Specifications AAA Processing and SDMA with 4 Spatial Channel in Typical Deployment Base Station 9 /12 Antennas User Terminal with 4/2/1 Antennas 625 KHz Channel and 16 Channel Aggregation Fixed Symbol Duration of 2us & Symbol Rate -500kspsec. TDMA-TDD Frame of 5ms 10 Modulation and Coding Modes BEST-WINE SYSTEM OVERVIEW : BEST-WINE SYSTEM OVERVIEW Highest Spectral Efficiency Adaptive Antenna Array Space Division Multiple Access Link Adaptation & Adaptive Modulation & Coding Power Control BEST-WINE Layered Protocol Architecture : BEST-WINE Layered Protocol Architecture BEST-WINE Base Specification Overview : BEST-WINE Base Specification Overview SDMA CONCEPT : SDMA CONCEPT BEAM DISTRIBUTION : BEAM DISTRIBUTION DIGITAL BEAM FORMING ARRAY : DIGITAL BEAM FORMING ARRAY Total independent channels Channel Bandwidth Limited -DSP speed related to bandwidth Allows Distributed Power Very good Interference Rejection -channel nulls. DIGITAL BEAM FORMING ARRAY : DIGITAL BEAM FORMING ARRAY FREQUENCY SCANNED ARRAY : FREQUENCY SCANNED ARRAY Slide 19: Employs Frequency Tracking mobiles -Radio chooses the Optimal band Improves the Range -High gained frequency antennas are easily constructed Adaptive Nulling through Frequency channel selection -Each direction corresponds to a frequency Best used in Wide Band systems FREQUENCY SCANNED : FREQUENCY SCANNED Channel Spacing : Channel Spacing Spectral allocation is divided into one or more RF channels of bandwidth 625 kHz each RF channels are divided into 5 ms frames Frame Structure : Frame Structure Transmission Channel Block Diagram : Transmission Channel Block Diagram PREAMBLE AND FACH SIGNALS : PREAMBLE AND FACH SIGNALS Modulation and Coding Rates : Modulation and Coding Rates Smart Antenna Concept : 26 RF PHY MAC Single Input Single Output (SISO) Antenna Configuration FUTURE Multiple Input Multiple Output (MIMO) Antenna Configuration “N” element antenna array Integrated RF chains Signal Processing Algorithm Engine TODAY RF Strategy #1: Raise the Theoretical Channel Capacity Smart Antenna Concept Bps/Hz Analog Digital PHY PHY Implementation: Base Station Architecture : Implementation: Base Station Architecture Simulation Results : Simulation Results Simulation configuration parameters: Beam forming : Beam forming User 1 @ AOA 30degree user 2 @ AoA 10degree user 3 @ AoA 50deg user 4 @ AoA 20deg Beam formed for different Users at different AOA at 3db SNR with ModClass 5 Slide 30: DATA TRANSMISSION OF USER1 WITH MODCLASS 5 AND DIFFERENT SNRS Equalized Data at 25dB SNR Equalized Data at 15dB SNR Equalized Data at 10dB SNR Throughput at various ModClasses : Throughput at various ModClasses Application : Application Green Base station Best suited for VoIP & SIP Telephonic conference even at high mobility VoD Provides high definition quality for Telemetric operations Mobile TV Online Gaming High Speed internet at low Bandwidth Benefits : Benefits Increases the coverage area 12.4 kms Saves power hence …….. Green Base Station Very less Bandwidth is required 5Mhz 2000 Users can be registered at a given time System spectrum efficiency is good Cell capacity throughput is 10MHz Size of the base station is small compared to others. Provides Mobility up to 250KM/Hr Developments : Developments Need to save more power, currently each Base station is consuming 800 MW to 1070 MWS Need to achieve higher data rate above 300Mbps Should support higher mobility above 350KM/hr Slide 35: Conclusion ~4x improvement! 4 b/hz to 16 b/hz (Theoretical) Slide 36: THANK YOU A Complete and Fully Compliant TDD Technology For IEEE 802.20: MBWA