Broadband MIMO radio frequency transceiving system for next-generation wireless communication network

A wireless communication network, radio frequency transceiver technology, applied in the field of microwave wireless communication transceiver system, can solve problems such as DC offset, flicker noise, etc., and achieve the effect of reducing complexity, cost, cost and circuit complexity

Active Publication Date: 2011-01-12
SOUTHEAST UNIV
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Problems solved by technology

However, due to various technical problems in the zero-IF structure itself, such as DC offset, flicker noise, etc., the performance index it can achieve is not as high as that of the superheterodyne structure.
[0005] As mentioned above, sinc...

Method used

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  • Broadband MIMO radio frequency transceiving system for next-generation wireless communication network
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  • Broadband MIMO radio frequency transceiving system for next-generation wireless communication network

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the core of the present invention-the radio frequency transceiver will be further elaborated below in conjunction with the accompanying drawings.

[0024] The radio frequency transceiver contained in the present invention is composed of a local oscillator module, a transmitting module and a receiving module.

[0025] The transmitting module adopts a zero-IF structure, such as image 3 As shown, including operational amplifiers, quadrature modulators, filters, radio frequency switches, digitally controlled attenuators, amplifiers, power amplifiers, transmission power detection circuits, transmission power supply modules, etc. The differential analog baseband signal (I / Q) output by the baseband system is amplified by the operational amplifier and then input to the quadrature modulator after being amplified by an operational amplifier. The quadrature modulator directly modulates...

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Abstract

The invention discloses a broadband MIMO radio frequency transceiving system for the next-generation wireless communication network. The system comprises a receiving module, a local oscillation module, a transmitting module, a power supply module and a control module. In the invention, the frequency utilization efficiency of over 10bit/Hz is realized through the adoption of a 100MHZ channel bandwidth and six-transmitting and six-receiving MIMO configuration. Site tests show that the system can support the data transmission rate of over 1Gbit/s and meets the requirements of International Telecommunications Union on the next-generation digital mobile communication system (4G). The system fully combines and takes full advantage of a superheterodyne architecture and a zero intermediate frequency architecture, adopts an asymmetric structure, adopts the zero intermediate frequency architecture in the transmitting module and adopts the superheterodyne architecture in the receiving module. The way reduces the complexity of circuits and the costs of the system while guaranteeing the performances of the system. The local oscillation module of the system adopts an innovative design, so that the cost of the system and the complexity of the circuits are reduced.

Description

technical field [0001] The invention relates to a microwave wireless communication transceiver system, in particular to a broadband MIMO transceiver system that meets the requirements of the IMT-Advanced system and can be applied to the next generation wireless communication system. Background technique [0002] Mobile communication technology and industry have developed rapidly in the past ten years. At present, a complete service network has been established around the world, providing people with convenient and high-quality communication services, changing people's way of life, and creating huge economic benefits. In recent years, as streaming media, social networking, network downloading and other new social and entertainment methods have increasingly affected life, people have higher and higher requirements for data transmission rates of mobile services. The traditional second-generation digital mobile based on circuit switching Communication networks such as GSM an...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04B1/26H04B7/02
Inventor 于志强周健义赵佳宁赵腾洪伟
Owner SOUTHEAST UNIV
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