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UWB & Ubiquitous Wireless Communications

UWB & Ubiquitous Wireless Communications. 2005 中国射频与宽带 IC 技术高峰论坛 ZHOU Zheng 周正 zzhou@bupt.edu.cn 2005.10.19. Beijing Univ. of Posts & Telecom. Agenda. Introduction What is UWB? Regulation/EMC Standards DS-UWB vs. MB-OFDM UWB with Applications UWB in China. 绝对带宽 (FCC). 0. - 10.

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UWB & Ubiquitous Wireless Communications

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  1. UWB & Ubiquitous Wireless Communications 2005中国射频与宽带IC技术高峰论坛 ZHOU Zheng 周正 zzhou@bupt.edu.cn 2005.10.19. Beijing Univ. of Posts & Telecom.

  2. Agenda • Introduction • What is UWB? • Regulation/EMC • Standards • DS-UWB vs. MB-OFDM • UWB with Applications • UWB in China

  3. 绝对带宽(FCC) 0 -10 -20 归一化功率谱（dB） 绝对带宽(DARPA) 中心频率 频率轴 What Is Ultra-Wideband? 分数带宽（FBW）＝绝对带宽/中心频率 DARPA：FBW>25％ （－20dB） FCC：FBW>20％或者绝对带宽>0.5GHz （－10dB） 这样的系统被定义为UWB系统 Time Frequency 时域波形 信号频谱

  4. 802.11a HyperLAN1/2 PCS Power Spectral Density dBm/MHz 900 MHz Cordless Phones UWB −41 dBm/MHz 10 5 1 2 3 4 6 7 8 9 Frequency (GHz) What Is Ultra-Wideband? • Transmit power gives range and Bandwidth gives speed • Traditional narrowband optimized for long range & low rates • UWB is great for short range & high data rates & low power • Potential for best speed/power for short range applications Captured by DS-UWB

  5. ANALOG: I A/D DIGITAL: LNA MIXER Q A/D F SYNTH D/A PA MIXER D/A ANALOG: I LNA A/D DIGITAL: D/A PA 全数字化 Conventional Integrated, Narrowband Transceiver: A “Mostly Digital” Radio:

  6. UWB-Regulation and EMC • FCC’s First Report and Order-USA • FCC: http://www.fcc.gov • ETSI ERM: http://portal.etsi.org-Europe • CEPT: http://www.ero.dk • MPHPT: http://www.soumu.go.jp/joho_tsusin/ • eng/index.html-Japan • CRL: http://www.crl.go.jp • IDA: http://www.ida.gov.sg-Singapore • ITU-R SG1 TG 1/8-UWB EMC • China State Radio Monitoring Center

  7. FCC-2002年2月14日

  8. Regulatory UWB

  9. IEEE 802.22 Cognitive Radios

  10. volts time What is DS-UWB • Two wide 50%-bandwidth contiguous bands • Each captures unique propagation benefits of UWB • Bandwidth and center frequency programmable • Minimized potential for interference • Low band provides long wavelet • High band provides short wavelet • Wavelet = 3 cycles - packed back-to-back 3 4 5 6 7 8 9 10 11 GHz • Wavelets are modulated with BPSK or QPSK • An N-chip code sequence (symbol) represents a bit • Code is ternary (+1, 0, -1) 1 1 … … −1 −1 • Result is Not-spiky in either Time or Frequency Domain N-chips

  11. IEEE 802.15.4a 研究组 • UWB Interest--UWB冲激无线电 – High precision location capability高精度定位 – High aggregate throughput, – Scalability to data rates, range, power consumption, and cost低功耗低成本 • Call for applications征求应用提案 – 26 Proposals January 2005 – Down select voting March 2005 DS-UWB > 60%

  12. IEEE 802.15.4a标准草案通过 • IEEE日前宣布，美国亚特兰大市举行的IEEE 802全体会议(Plenary Meeting)无线个人区域网络(WPAN)标准化分会期间，该组织已经全体通过世界上第一项低速率无线个人区域网络(WPAN)的标准草案——IEEE 802.15.4a。 • 据悉，该联合提案与其它IEEE802.15.4a UWB提案(低速率)进行了成功的融合(Merge)，并在此基础上被进一步接纳为唯一候选提案，又顺利通过了其后的信任投票(Confirmation voting)而成为IEEE 802.15.4a标准草案。张宏纲指出，这是在无线个人区域网络UWB标准化领域，由中欧双方合作提交的标准提案“首次获得圆满成功”。2005年03月24日(电子工程专辑）

  13. 有关UWB 的 特点（容量） 802.15.3a 802.15.4a

  14. UWB-RT应用领域 • 高速无线个域网(HDR-WPAN) 802.15.3a • Wireless Ethernet interface link (WEIL) • Intelligent wireless area network (IWAN) • Outdoor peer-to-peer network (OPPN) • Sensor, positioning, and identification network (SPIN)定位、探测 Wireless Sensor Network( WSN) 802.15.4a

  15. China UWB Forum中国超宽带无线技术论坛 • MII State Radio Monitoring Center • Tsinghua University • Beijing Univ. of Posts & Telecom. • Motorola/Freescale Semiconductor • 2004.9.24. www.uwbforum.org.cn • 2005.10.11.第二届中国超宽带无线技术论坛

  16. 北京邮电大学 无线网络实验室 • 国家863：超宽带无线传输技术的研究与开发 • 教育部科学技术研究重点项目：超宽带无线通信技术及其电磁兼容的研究 • 国家自然科学基金项目：超宽带无线通信射频电路设计理论与调制方式的研究 • 国家自然科学基金重点项目：超宽带高速无线接入理论与关键技术 • 国家无线电监测中心预研项目：超宽带无线技术电磁兼容的分析研究 • 北京市自然科学基金项目：超宽带冲激无线电传感器网络的研究

  17. UWB & 家庭网络联盟 • DVD/ HDTV/VOD-set top box • Haier Group—Itop Home • Lenovo--IGRS • Amoi Electronics Co. LTD • Changhong Electric Co. LTD • Motorola/Freescale –XSI chipset

  18. Haier wireless HDTV with UWB • Haier and Freescale Semiconductor are introducing the world's first UWB-enabled LCD HDTV • Freescale's UWB technology can transfer multiple high-definition (HD) or MPEG2 movie streams (max. 110Mbps) over distances of up to 20 meters. This enables consumers to place the DVD player and Media Server away from the TV • The Haier wireless LCD HDTV has a 37" panel with 1080i resolution.

  19. 1st China Japan Korea UWB Workshop • 1st CJK UWB Workshop 2005.9.27. Seoul, Korea. • --China / Japan / Korea UWB Forum –RAPA • Policy Direction of C J K UWB Radio • Current R&D Status and its Future Vision of UWB Radio Technology in C J K • Interference Measurement and Analysis Report of C J K • What and How to collaborate to promote UWB Technology between C J K

  20. Thank you

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