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- Title
面向 TD-LTE 网络的塔顶放大器控制单元设计.
- Authors
吕燚; 李文生; 邹昆
- Abstract
According to the communication and control performance requirement of Time Division Long Term Evolution (TD-LTE) network's Time Division Duplex(TDD) work mode for tower mounted amplifier (TMA), a controller design scheme is provided which conforms to Antenna Interface Standard Group (AISG) protocol. Circulator and high power radio frequency(RF) switch are jointly employed to build the transceiver module, which improves the isolation between uplink and downlink and also avoids the closed loop self-excitation. A demodulation method based on logarithmic amplifier is used to realize the OOK communication circuit with adjustable demodulation sensitivity. TMA state detection and fault handling methods are designed through synchronous measurement of its working current during uplink slot to improve the efficiency of fault exploration and recovery. Test results show that the presented design scheme primely meets the requirement of AISG protocol, the state monitoring function is perfect, alarm raising way is resonable, and it also features auto-recovery function under non- permanent failure.
- Publication
Telecommunication Engineering, 2017, Vol 57, Issue 12, p1440
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2017.12.016