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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ mm-Wave Beamforming ] Date Submitted: [27 February, 2005] Source: [Fred Mohamadi] Company [TiaLinx, Inc.] Address [8 Halley, Irvine, CA 92603, U.S.A.]

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [mm-Wave Beamforming] Date Submitted: [27 February, 2005] Source: [Fred Mohamadi] Company [TiaLinx, Inc.] Address [8 Halley, Irvine, CA 92603, U.S.A.] Voice:[949-285-6255], FAX: [949-387-9737], E-Mail:[fm@TiaLinx.com] Re: [] Abstract: [A proposed completely electronically controlled beamforming technology for coverage enhancement] Purpose: [Contribution to 802.15 SG3c at March 2005 plenary in Atlanta, GA.] Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Fred Mohamadi, TiaLinx, Inc.

  2. Objectives • To address enhanced coverage using Smart Beam Forming and RF adaptive tracking with multi-antenna system that can be implemented with standard and state-of-the-art integrated semiconductor processes • To enable robust coverage and reliable tracking of established links electronically. • To solicit interest in promoting development of channel optimizer components based on algorithms that are complementary or independent of the base-band processors • To substantially improve power-to-range ratio and enhance reliability of wireless links for fixed and mobile converged applications Fred Mohamadi, TiaLinx, Inc.

  3. A Multi-input, Multi-output Wireless System Fred Mohamadi, TiaLinx, Inc.

  4. Combining and De-combining at RF • Base-band implementation using various coding schemes (such as STC) and combination of antenna arrays will address NLOS beamforming/beamsteering. • Link reliability enhancement is based on a predefined NLOS channel characteristics in an adhoc environment. Fred Mohamadi, TiaLinx, Inc.

  5. Addressable Antenna Array Fred Mohamadi, TiaLinx, Inc.

  6. Distributed Phase Shifting Using a Central Clock References: [1] F. Mohamadi, “Si integration with millimeter wave phased array antenna,” RF Design, February 2004, pp 40-48. [2] X.Guan, H. Hashemi, A. Kmijani, and A. Hajimiri, "Multiple Phase Generation and Distribution for a Fully-Integrated 24-GHz Phased-Array Receiver in Silicon." Caltech Internal report February 2004. Fred Mohamadi, TiaLinx, Inc.

  7. An Active Element in a Distributed Array [3] F. Mohamadi, “Wafer Scale Integration,” RF Design, February 2005, pp 48-62 Fred Mohamadi, TiaLinx, Inc.

  8. Beamwidth of Various Array Arrangements Directionality provides enhanced SNR and extended reach Fred Mohamadi, TiaLinx, Inc.

  9. Dynamic Phase Shifting and Beamforming Effective 30-40 dB dynamic nulling per node is feasible Fred Mohamadi, TiaLinx, Inc.

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