【正文】 b Video streaming Video Mail TV Conference Interactive TV 低 速 數(shù) 據(jù) 87 高 速 數(shù) 據(jù) WAP GPRS 3G 移動(dòng)數(shù)據(jù)業(yè)務(wù)發(fā)展方向 Wireless Technology Innovation Institute WTI Research Beyond 3G3G Future Terminals (未來的終端 ) ? Composite Communicator 綜合通訊器 ? Connected Entertainment Terminal 聯(lián)網(wǎng)娛樂終端 ? Personal Device Network 個(gè)人設(shè)備網(wǎng)絡(luò) 88 89 WTI Wireless Technology Innovation Institute 4G TDD試驗(yàn)網(wǎng)絡(luò)介紹 4G系統(tǒng)介紹 網(wǎng)絡(luò)介紹 Wireless Technology Innovation Institute WTI 幀結(jié)構(gòu)設(shè)計(jì) 系統(tǒng)上行幀結(jié)構(gòu) 系統(tǒng)下行幀結(jié)構(gòu) – 考慮 TDSCDMA系統(tǒng)兼容性 – 便于上下行業(yè)務(wù)分配 – 結(jié)合先進(jìn) OFDM技術(shù) – 支持 15公里覆蓋 – 峰值速率高達(dá) 122Mbps 90 正在申請(qǐng) 2項(xiàng)專利 Wireless Technology Innovation Institute WTI AP MT – 上行 4發(fā) 8收 – – 下行 4發(fā) 4收 低復(fù) 雜度 – – – – – – 上行 2發(fā) 2收 下行 2發(fā) 2收 室內(nèi)、室 外高速數(shù)據(jù)傳輸 低復(fù)雜度 符合當(dāng)今研究潮流 (LTE,西門子 …) 91 – – – – 上行 4發(fā) 8收 下行 2發(fā) 4收 低復(fù)雜度 室外高速移動(dòng)環(huán) 境高速數(shù)據(jù)傳輸 靈活配置的 MIMO方案 靈活配置的 MIMO方案適用于多種環(huán) 境下高速傳輸 室內(nèi)高速數(shù)據(jù)速 率業(yè)務(wù) OXCDM 一種應(yīng)用于實(shí)際 MIMO系統(tǒng)接收端的天線失衡保護(hù)方法 一種增強(qiáng)實(shí)際 MIMO系統(tǒng)接收機(jī)性能的方法 基帶參數(shù) 參數(shù)數(shù)值 雙工方式 TDD 載頻 Fc GHz 系統(tǒng)帶寬 B 20 MHz 子載波數(shù) 1024 有效子載波數(shù) 884 有效帶寬 MHz 子載波間隔 ΔF KHz 循環(huán)擴(kuò)展 CP 216（ us） 符號(hào)周期 Ts += us 調(diào)制方式 16QAM 編碼速率 R（ Turbo/LDPC） / 發(fā)送接收天線數(shù) 8（基站） 4（移動(dòng)臺(tái)） 92 WTI Wireless Technology Innovation Institute B3G/4G TDD系統(tǒng)參數(shù)設(shè)計(jì) —— 基帶參數(shù) 93 – – – – 多路視頻點(diǎn)播 無線 FTP下載 上網(wǎng)、即時(shí)通 信 VoIP語音業(yè)務(wù) 清晰的流媒體畫質(zhì) 高速的數(shù)據(jù)傳輸 可靠的 Inter接入 話音清晰、無時(shí)延 Wireless Technology Innovation Institute 室內(nèi)演示場(chǎng)景 可同時(shí)承載的業(yè)務(wù) – 誤塊率低于 %，誤碼率低于 WTI AP MT 無線環(huán)境 鏈路性能 – 系統(tǒng)峰值速率可達(dá) 122Mbps WTI Wireless Technology Innovation Institute 室外演示場(chǎng)景 – – – – – – 通用硬件平臺(tái) 即插即用 模塊化的總體架構(gòu) 可伸縮的系統(tǒng)規(guī)模 全面的分布式并行處理 完全的軟件定義無線電 靈活的單板結(jié)構(gòu) 可根據(jù)需要配置 功能強(qiáng)大的 ACTA機(jī)箱 94 協(xié)同分布式天線架構(gòu) 靈活配置的 MIMO方案 單頻組網(wǎng)（ OFDMA組網(wǎng)） 小區(qū)間實(shí) 現(xiàn)無縫切換 Wireless Technology Innovation Institute 95 WTI BU。 Timing Base antenna elements 1 ??????Data Bus TRx 1 x1 (n) Spreading Tx(DL) Beamforming DBB DSP TRx 1 xM (n) TRx 1 x3 (n) TRx 1 x2 (n) 2 3 M UL adaptive algorithm DL adaptive algorithm MODEM MCU Data and Signaling ... ... WTI Rationale reference despreading amp。 。 Premercial System 2022 2022 2022 57 WTI Wireless Technology Innovation Institute WiMAX、 Wibro 58 Wireless Technology Innovation Institute WTI 59 Wireless Technology Innovation Institute WTI 60 Wireless Technology Innovation Institute WTI Wireless Technology Innovation Institute WTI Mobility Vehicle speed (60 km/h, 120 km/h) Good performance while on the move IP Compatible with Inter world Diverse terminal types (PC/PMP/PDA/Phones etc) Broadband 1Mbps per user Broadband uploading capability 61 What is WiBro? WiBro (Wireless + Broadband) Harmonization with Mobile WiMAX Based on IEEE Standard An OFDMA based Profile of IEEE Standard 62 WTI Wireless Technology Innovation Institute WiBro on the Evolution Paths to 4G 1995 2022 200 Mbps ~ kbps 50 Mbps 144 kbps 2022+ 384 kbps 2G (Digital) 1G (Analog) GHz WLAN 4G PAN 5 GHz WLAN Fast Slow 1Gbps DM OF A 2022 CDMA 5 GHz WLAN 3G (IMT2022) WiBro EVDO 63 WTI Wireless Technology Innovation Institute WiBro on the Evolution Paths to 4G 2022~2022 Cellular Based (3GPP, 3GPP2) Inter Based (IEEE) cdma2022 1x EVDO WCDMA Rev. A 2022~2022 2Mbps/2Mbps 153kbps/ 153kbps/ 307kbps 2022~2022 2Mbps/ WCDMA(R6) HSUPA WCDMA(R5) HSDPA 4G 54Mbps 75Mbps(Fixed) 6Mbps/ WiBro Harmonization 11Mbps 100Mbps WiBro2 2022~2022 30Mbps EVDO Rev. B EVDO Rev. C * 3G LTE HSOPA WTI Wireless Technology Innovation Institute WiBro Requirements Major System Parameters Radio Access Requirement TDD OFDMA 10 [MHz] Duplexing Multiple Access Channel BW Frequency Reuse Factor Mobility Service Coverage Spectral Efficiency [bps/Hz/cell(sect.)] Handoff Throughput (per user) 1 ≤ 60 [Km/h] ≤ 1 [Km] Max. DL / UL = 6 / 2 Aver. DL / UL = 2 / 1 ≤ 150 [ms] Max. DL / UL = 3 / 1 [Mbps] [Kbps]64 Wireless Technology Innovation Institute WTI 概 要 4G的技術(shù) 物理層技術(shù) 無線接入網(wǎng) 終端及業(yè)務(wù) 4G TDD試驗(yàn)網(wǎng)絡(luò)介紹 65 66 WTI Wireless Technology Innovation Institute 物理層技術(shù) OFDM 多載波技術(shù) MIMO多天線技術(shù) 鏈路自適應(yīng)技術(shù) 智能天線 67 Wireless Technology Innovation Institute WTI Wireless Technology Innovation Institute WTI OFDM was patented in the . in Jan. 1970 (1) The plexity of realtime FT. (2)The stability of oscillators in Tx and Rx. (3)The linearity requirement in RF power amplifier. 68 First appearing In the late 1950s and early 1960s, the first system using MCM (military HF radio links) 69 WTI Wireless Technology Innovation Institute Now is reborn again Application requirements Broadband High speed multimedia, not only fixed broadcasting service, but also to support mobile applications. Hardware Conditions 1)advance in digital signal processing 2)VLS