PROGRESS: Completed Project	PROJECT REF: PA042
PROJECT TITLE: Low-complexity Antenna Diversity Receiver
PROJECT DESCRIPTION: This new low-complexity antenna diversity receiver is a method for combining signals from two antenna diversity branches to optimize signal to interference ratio, using low-cost, low-complexity circuits and straight-forward low-computational-power algorithms. This receiver is suitable for TDMA PCS handset implementation employing two diversity branches. Antenna diversity not only can improve the quality of communications in a wireless environment, but also will result in increased capacity. However, system complexity, with the associated power consumption, cost and size, is a significant barrier to implementing two-antenna optimum-combining in handsets. This new receiver is capable of selecting a diversity scheme that is anticipated to give optimum signal reception among a plurality of diversity schemes installed on the receiver. This receiver, more conveniently termed multi-diversity receiver comprises a single conventional wireless digital receiver chain augmented with a few additional low-cost passive RF components and minor control circuits. The invention is ideal for handset implementation. Potential Applications: - Wireless communications systems - Mobile handsets Advantages over Present Technologies: 1. Improve sensitivity of the mobile handset 2. Require a single receiver chain and baseband combining processor as well as standard baseband processing technique 3. Cost-effective due to using low-cost passive RF front-end components for combining antenna signals at RF 4. Can handle poorly-defined user-dependent antenna patterns
FOCUS AREA(S): Communications Technologies, Consumer Electronics
KEYWORDS: wireless communication, mobile handsets, antenna, receiver
MODE OF COLLABORATION: Technology Licensing, Further R&D Collaboration
STATUS PATENT: Granted	PATENT NO: US6172970
ORGANIZATION: Hong Kong University of Science and Technology R and D Corporation Limited
CONTACT PERSON: Shirley Woo	EMAIL: cawoosw@ust.hk
TEL: (852)-23587918	FAX: (852)-23582751
WEBSITE: http://rdc.ust.hk	DATE: 29/12/2004