A scalable low-power multi-service transceiver system

Abstract

The invention discloses a scalable low-power-consumption multi-service transceiver system, which adopts a pluggable board card-type design. In a full-service state, one digital main board, two digitalslave boards, one optical port expansion board and 14 radio frequency boards can be inserted into a back board. The invention adopts the plug-in card design, and can increase the digital signal acquisition board (digital slave board) according to the radio frequency service quantity. Each radio frequency board is a unified interface to the back board, and can be inserted into the corresponding frequency band radio frequency board according to the demand. The invention is based on the digital resampling frequency conversion and compression algorithm, compresses the transmission data amount, reduces the transmission rate of the system, and enables the system to meet the co-construction and sharing requirements of 14-way services.

Description

technical field [0001] The invention belongs to the technical field of digital communication, and in particular relates to an expandable low-power consumption multi-service transceiver system. Background technique [0002] As operators' 3G / 4G networks, home broadband, and wireless WLAN are highly improved, the types and quantities of wireless service applications are becoming more and more abundant, and the rapid growth of data throughput has put forward higher requirements for the coverage quality of wireless networks. Users have higher and higher requirements for call quality and data services, and require mobile networks to be ubiquitous. It is urgent to build a more general hardware platform and a flexible loading software platform to adapt to the signal coverage of services of various standards. In terms of digital signal processing, the RF signal will first be mixed to a suitable intermediate frequency, and then the intermediate frequency signal will be digitized. For ...

AI Technical Summary

Problems solved by technology

In terms of digital signal processing, the RF signal will be mixed to a suitable intermediate frequency first, and then the intermediate frequency signal will be digitized. For the uplink, the intermediate frequency signal will be converted into a digital signal through AD, but the high sampling rate of the signal will give the baseband processing module heavy burden, therefore, digital signal processing must be done to downsample the signal

The downlink is just the opposite. If the baseband signal with a low sampling rate is directly simulated, it will cause a large quantization error in the system, and it will also increase the difficulty of analog filter design.

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