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

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

Uplink Macrodiversity Method for Multi-antenna, Orthogonal Frequency Division Multiple Access Cellular System technical field 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 (MIMOOFDMA) cellular system. Background technique 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 n...

AI Technical Summary

Problems solved by technology

In the cellular MIMOOFDM 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 easily affected by channel shadow fading and interference, and its transmission service the quality of

At present, 3GPP LTE has little research on the uplink proposal (especially the system combining L(D)-FDMA and MIMO)

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