Rate-adaptive multiple input/multiple output (MIMO) systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04C-007/02
H04C-001/62
H04M-001/00
H04B-007/00
출원번호
UP-0316068
(2008-12-09)
등록번호
US-7792500
(2010-09-27)
발명자
/ 주소
Luo, Hui
Sollenberger, Nelson Ray
Winters, Jack Harriman
인용정보
피인용 횟수 :
7인용 특허 :
14
초록▼
A rate-adaptive method of communicating over a multipath wireless communication system uses multiple links such that each end of a link uses multiple transmit and receive antennas. A number of independent streams that are to be transmitted for each link is determined based on an overall system perfo
A rate-adaptive method of communicating over a multipath wireless communication system uses multiple links such that each end of a link uses multiple transmit and receive antennas. A number of independent streams that are to be transmitted for each link is determined based on an overall system performance measure. In addition, the system may also jointly determine the best modulation, coding, power control, and frequency assignment for each link, based on an overall system performance measure. In OFDM systems, the number of independent streams, as well as the modulation, coding, and power control, may be determined on a tone-by-tone basis based on an overall system performance measure.
대표청구항▼
What is claimed is: 1. A method executed in a mobile station that communicates with a base station, where said mobile station has multiple antennas and said base station has M>1 antennas, comprising the steps of: determining channel conditions between said antennas of said mobile station and a
What is claimed is: 1. A method executed in a mobile station that communicates with a base station, where said mobile station has multiple antennas and said base station has M>1 antennas, comprising the steps of: determining channel conditions between said antennas of said mobile station and antennas of said base station; and sending a request to said base station, based on said step of determining, to send information coded for Co-Channel interference (CCI) suppression, Multiple-Input-Multiple-Output (MIMO) reception, or a mixture of both, which request causes said base station to send a particular stream of information through all of its multiple antennas when requesting information coded for CCI suppression, and to send M different streams of information, each over a different one of its M antennas, when requesting information coded for MIMO reception. 2. The method of claim 1 where, when said step of determining concludes, by performing comparisons, that Signal-to-Interference-and-Noise Ratio (SINR) is higher than a preselected first threshold and channel fading correlation is lower than a preselected second threshold, said request is for MIMO reception. 3. The method of claim 1 where, when said step of determining concludes, by performing comparisons, that Signal-to-Interference-and-Noise Ratio (SINR) is not higher than a preselected first threshold or channel fading correlation is not lower than a preselected second threshold, said request is for CCI suppression. 4. The method of claim 1 where when said step of determining concludes, by performing comparisons, that Signal-to-Interference-and-Noise Ratio (SINR) is higher than a preselected first threshold, and channel fading correlation is lower than a preselected second threshold, said request is for MIMO reception; when aid step of determining concludes, by performing comparisons, that said (SINR) is lower than a preselected first threshold, or said channel fading correlation is higher than a preselected second threshold, said request is for CCI suppression; and when said step of determining concludes, by performing comparisons, that said (SINR) is moderate, and said channel fading correlation is moderate, said request is that said base station send a number of streams of information that is between 1 and M.
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이 특허에 인용된 특허 (14)
Golden Glenn David ; Martin Carol Catalano ; Sollenberger Nelson Ray ; Winters Jack Harriman, Adaptive communication system and method using unequal weighting of interface and noise.
Menon, Murali Paravath; Ketchum, John W.; Wallace, Mark; Walton, Jay Rod; Howard, Steven J., Beam-steering and beam-forming for wideband MIMO/MISO systems.
Mark Wallace ; Jay R. Walton ; Ahmad Jalali, Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system.
Walton, Jay R.; Wallace, Mark; Ketchum, John W.; Howard, Steven J., Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information.
Ling, Fuyun; Walton, Jay R.; Howard, Steven J.; Wallace, Mark; Ketchum, John W., Method and apparatus for utilizing channel state information in a wireless communication system.
Paulraj,Arogyaswami J.; Sebastian,Peroor K.; Tellado,Jose; Heath, Jr.,Robert W., Method and wireless communications systems using coordinated transmission and training for interference mitigation.
Ko, Young-Jo; Ahn, Jae Young; Seo, Bangwon, Cooperative communication method in cellular wireless communication system and terminal for performing the method.
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