7 research outputs found
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The Market Opportunity for Multiple Antenna Technology for Next Generation Broadband Wireless Systems
The rapid growth of the Internet user base and of bandwidth-hungry applications in recent years has created a need for broadband wireless (BW) access for residential and business consumers. The only predictable trend is that data rates and QoS requirements will increase rapidly. This demand for high-speed wireless access/connectivity is becoming a market force for advanced wireless broadband technologies and networks. One of the major technology innovations to affect the future of broadband wireless industry is the use of multiple antennas and either end of the wireless link to provide unprecedented gains in capacity, link reliability and data rates. While the expected benefits associated with multiple antenna technology are high, there is a perceived significant cost (in terms of R&D, implementation, hardware, inertial) associated with adoption of multiple antenna technology. This paper presents the results of a study of the evolving broadband wireless industry that aimed to analyze the barriers to adoption of multiple antenna technology in shaping future wireless systems.IC2 Institut
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Multiple antenna wireless systems: capacity and user performance limits
textMultiple antenna wireless systems are those that have multiple transmit and/or multiple
receive antennas, and are often referred to as multiple input multiple output (MIMO)
wireless systems. Significant gains in the data rate for point-to-point systems was shown in
[1, 2] by employing multiple antennas at both the transmitter and the receiver. This rate
gain results from the creation of multiple parallel, possibly decorrelated, spatial channels
between the transmit and receive antennas.
The MIMO point-to-multipoint system naturally occurs as the downlink of a cellular
system where there is a multiple antenna central transmitter and multiple users each with
multiple receive antennas. An understanding of the MIMO point-to-multipoint system involves
fundamental advances in multiuser information theory and raises many new issues.
Understanding these issues, which range from characterizing the theoretical rate gain associated
with point-to-multipoint MIMO systems to devising joint transmit strategies and
scheduling policies that may exploit this theoretical rate gain, is the primary focus of this
research.Electrical and Computer Engineerin
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Resource allocation scheduling method for a cellular communication system
A resource allocation scheduling method for a cellular communication system that can avoid interference between cells. The method includes dividing a frequency band of a system into frames each having preferential allocation blocks and general allocation blocks on a time axis, classifying terminals in each cell into groups of terminals vulnerable to interference and terminals non-vulnerable to interference, and allocating resources by terminal groups according to priority orders given to the terminal groups. The preferential allocation resources designed to have the orthogonality to the interference cells, i.e., sectors, on the time axis are allocated to the terminals vulnerable to the interference, and the remaining resources are allocated to the terminals non-vulnerable to the interference.Board of Regents, University of Texas Syste