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Optimal Spatial Sub-channel Resources Allocation Mechanism for Sustainable Bit Rate Wireless Conduits

技術應用: In a wireless LAN environment, the algorithm can be used to build a multiple antenna system that not only increases bandwidth but also maintain a constant bit rate pipe. The scheme can be implemented in other wireless networks such as 3G.

詳細技術說明: University researchers have developed an optimal algorithm that optimizes the transmitting power and bits-per-symbol allocation to each of the transmitting antennas in a multiple-input-multiple-output wireless system, so that an overall constant bit rate can be maintained with minimal power consumption. A Leaky Bucket-based power budget algorithm is also devised to smooth out total power allocation among channel burst periods.

*Abstract: The latest video compression standard (MPEG-4) has moved the wireless industry one step closer to the world of high quality multimedia services. Commercial wireless MPEG-4 video codec systems can already support up to Level 3 of the MPEG Simple Visual Profile. However, the issue of how to effectively transport such high quality multimedia streams across fluctuating radio channels remains a challenge because highly compressed data is very susceptible to low quality fluctuating channel conditions. Advancement in adaptive antenna array technologies such as BLAST, makes it possible to support sustainable bit rate (SBR) conduits in a practical manner. However the use of multiple antennas introduces another dimension of variation - the diversity or different fading levels among sub-channels.

*Principal Investigation: Name: Wenjun Luo
Department:

Name: Jasmine Zan
Department:

Name: Magda El Zarki
Department:

附加資料: Patent Number: US7430190B2
Application Number: US200542909A
Inventor: Luo, Wenjun | El Zarki, Magda | Zan, Lei
Priority Date: 22 Jan 2004
Priority Number: US7430190B2
Application Date: 24 Jan 2005
Publication Date: 30 Sep 2008
IPC Current: G08C001700 | H04B000704 | H04L001256 | H04W001628
US Class: 370334 | 370203 | 370208 | 370312 | 370487 | 455101 | 455137 | 455272 | 4555501 | 4555531 | 4555621 | 4555751
Assignee Applicant: The Regents of the University of California
Title: Systems and methods for resource allocation to multiple antenna arrays for maintaining a constant bit rate (CBR) channel
Usefulness: Systems and methods for resource allocation to multiple antenna arrays for maintaining a constant bit rate (CBR) channel
Summary: E.g. time division duplex (TDD) system and frequency division duplex (FDD) system.
Novelty: Wireless communication system e.g. time division duplex system has transmit system that adjusts transmission parameter of data signal to be transmitted over specific region based on signal fading level in specific region

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