Uplink sub-macro method used for multiantenna, orthogonal frequency division multiple access cellular system

An orthogonal frequency division multiple access and cellular system technology, which is applied in the uplink macro diversity, communication, and multi-antenna fields of orthogonal frequency division multiple access cellular systems, and can solve the problem of reduced transmission service quality, channel shadow fading, and low-latency discarding. rate and other issues, to achieve the effect of avoiding signal processing, excellent bit error rate performance, and reducing interference

Inactive Publication Date: 2007-05-23
PANASONIC CORP
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Problems solved by technology

In the cellular MIMO OFDM system, when the user terminal transmits multimedia and video telephony services, low delay and low packet (data packet) discard rate are required, and the user terminal located at the edge of the cell is susceptible to channel shadow fading and interference, and its transmission The quality of business often degrades
At present, 3GPP LTE has little research on the uplink proposal (especially the system combining L(D)-FDMA and MIMO)

Method used

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  • Uplink sub-macro method used for multiantenna, orthogonal frequency division multiple access cellular system
  • Uplink sub-macro method used for multiantenna, orthogonal frequency division multiple access cellular system
  • Uplink sub-macro method used for multiantenna, orthogonal frequency division multiple access cellular system

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the described embodiments are for the purpose of illustration only, and do not limit the scope of the present invention. The various numerical values ​​described are not intended to limit the present invention, and these numerical values ​​can be appropriately modified according to the needs of those of ordinary skill in the art.

[0037] Cellular MIMO OFDMA System

[0038] Figure 2 shows an example of a cellular MIMO system. Multiple antennas are installed on both the BTS end of the base station and the UE end of the user, and the user communicates with the base station. Figure 3 shows an example of a multi-cell OFDMA system, showing a multi-cell MIMO OFDMA system employing a hexagonal cell shape. There are six adjacent cells around each cell, each base station covers a cell, and the radio network controller RNC manages all the base stations...

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Abstract

The invention relates to an ascending macro grouping method used in multi-antenna orthogonal frequency-division multiple cellular systems, wherein said network comprises user terminal, base station and wireless network controller; the method comprises that: each one of base stations via channel evaluation, obtains the channel gain matrix factor between user terminal and base station; via channel gain, calculating out the signal/noise ratio of each antenna branch of each base station; sequencing the signal/noise ratios, form all antennas of all base stations, selecting the multi-amplitude antenna relative to the user antennas with high signal/noise ratio; based on selected antenna branch, the base station of said antenna branch uses relative carrier wave to process fast Fourier transform demodulation; and the wireless network controller processes multi-antenna check or decode on demodulated signal.

Description

technical field [0001] The invention relates to the field of wireless information transmission, in particular to transmission systems and corresponding communication methods for information such as wireless local area networks, fixed wireless access, mobile communications, and terrestrial digital television broadcasting using Orthogonal Frequency Division Multiplexing (OFDM) technology. More specifically, the present invention relates to an uplink macro-diversity method for a multi-antenna, orthogonal frequency division multiple access (MIMO OFDMA) cellular system. Background technique [0002] With the gradual integration of wireless network, multimedia technology and the Internet, people have higher and higher requirements for the type and quality of wireless communication services. In order to meet the requirements of wireless multimedia and high-speed data transmission, it is necessary to develop a new generation of wireless communication systems, and some new technologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/06
Inventor 黎海涛李继峰
Owner PANASONIC CORP
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