Mobile communication base station transceiver employing software radio technology and signal processing method

Abstract

The invention provides a mobile communication base station transceiver employing a software radio technology which is applied to a mobile communication system based on a time division (TD)/ frequency division multiple address (FDMA) technology. The transceiver comprises three components, namely a multi-mode control device, radio frequency front end and a digital signal processing device. The invention also provides a method for realizing the transceiver. The invention flexibly adapts to receiving and transmission of the signals from single carrier base station to multiple carrier base station, and supports multichannel diversity receiving; due to the adoption of a wideband transmitter, the invention flexibly adapts to emission of multiple carriers with irregularly distributed frequency and also avoid power loss when the multiple carriers are combined; by adoption of multiple narrow band radio frequency receiving channels, the invention can meet requirements for high dynamic and high blocking resistance performance of signal receiving; and by the invention, the mobile communication base station which has low power consumption, small size, high performance and flexible configuration can be realized.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a transceiver device and a signal processing method of a mobile communication base station using software radio technology. Background technique [0002] The basic idea of ​​software radio is based on a common, standard and modular hardware platform, through software programming to realize various functions of the radio station, liberating from the hardware-based, application-oriented radio design method. Since the 1990s, software radio technology has been widely used in the field of radio communication, and has made great progress in the field of mobile communication. [0003] Mobile communication systems include public mobile communication systems and private mobile communication systems. The former usually refers to the public land mobile communication system (PLMN); while the latter has a much wider range. In a general sense, the wireless trunking communication ...

AI Technical Summary

Problems solved by technology

[0006] 1) For channels with different carrier frequencies, a separate set of radio frequency transceiver and baseband processing equipment is required to receive them. The hardware structure of the base station is complex, which is not conducive to maintenance and cost reduction;

[0007] 2) Using baseband digital transceiver design, due to the analog quadrature demodulator or the inherent in-phase and quadrature branch amplitude and phase imbalance of the demodulator, it will lead to corresponding system performance loss;

[0008] 3) The degree of digitalization and softwareization of the system is low, the flexibility is poor, and it is not easy to expand and upgrade system functions;

When the transmitted signal passes through the combiner, the output signal power will be lost, which in turn will reduce the signal coverage;

[0013] 2) The software radio multi-carrier transceiver technology in the existing mobile communication system often adopts the implementation method of regular distribution of carrier frequency, which cannot realize the flexible configuration of channels;

Then, when the base station system does not adopt diversity reception, the received mobile station signal is only sent to one of the receiving channels for signal processing, and the remaining receiving channels cannot be used for receiving other carrier signals, which is obviously a waste of resources;

[0015] 4) The existing software radio multi-carrier receiving technology is limited by the dynamic range of the ADC, and it is difficult to meet the anti-blocking performance of the cluster base station when receiving multi-carrier signals, and it is difficult to meet the dynamic range of each carrier at the same time;

[0016] 5) The existing multi-carrier base station uses multiple channel machines to complete the function of transmitting and receiving multi-carrier signals, which not only causes power loss when the signals are combined, but also the performance of miniaturization and low cost of multi-carrier base stations is not easy to achieve

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