TD-SCDMA shrouding system and its digital time slot automatic level control method

Abstract

The invention relates to a digit time-slit automatic voltage control method of TD-SCDMA cover system, wherein it comprises: a, checking the radio signal power of ascending and descending chains, to output enveloped check wave signal; b, obtaining the automatic voltage control start value and ascending, descending switch points; c, combining frame synchronous instruct signal and time slit switch point to generate time slit instruct signal; d, based on said time slit instruct signal, outputting relative control information, and sampling relative enveloped check wave signal, to obtain the power sample value of each time slit; e, based on the time instruct signal, the time slit power sample value and the automatic voltage control start value, generating damping control value of each damper before the start of each time slit. The invention also discloses a relative TD-SCDMA cover system and the invention can effectively protect cover system and accurately control its output power.

Description

【Technical field】 [0001] The invention relates to the field of mobile communication coverage systems, in particular to a TD-SCDMA coverage system and a digital time slot automatic level control method thereof. 【technical background】 [0002] When using the TD-SCDMA system for networking, you will also encounter the problem of communication blind spots, because in the process of signal propagation, you often encounter obstacles, such as buildings, mountains, and various complex terrains. On the back and inside of various underground buildings, such as underground shopping malls, subways, and tunnels, there are communication blind spots due to signal inability to cover. The repeater system has the characteristics of low investment cost and the ability to rapidly expand the coverage area, and becomes an indispensable part in wireless network optimization and coverage. Repeater system is divided into outdoor repeater and indoor repeater. When building an indoor or outdoor cove...

AI Technical Summary

Problems solved by technology

This method is very effective in the frequency division multiplexing system, but for the TD-SCDMA system using the time division multiplexing, since each time slot signal reaches the detection circuit, the corresponding detection signal will be obtained. When using the obtained detection signal feedback for ATT control, it will cause the beginning of each time slot signal to not perform ALC and the subsequent signal to perform ALC, which will cause damage to the actual TD-SCDMA signal

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