By adopting a frequency detector in parallel with a half-rate bang-bang phase detector,it achieves a cooperation of the frequency locked loop and the phase locked loop,compared to the traditional dual loop architecture,the new hybrid circuit shows faster response speed,smaller area,lower power dissipation and less complexity.

Selection of driving means for feed pumps of nuclear half speed units;

The principle, advantages, disadvantages and application area of six main solutions such as half-rate technology, carrier-pool, cell merge, cell split, cell load sharing and carrier adjust are introduced one by one.

As wireless resource is scarce and the traffic changes largely in some areas, the article analyses the performance of volume increase and congestion decrease by using half-rate technology.

In this article, the half-rate technology and the Ireland B concept are described.

By using the half rate technology, network capacity can be spread double without extra TRX or extra carrier freq.

This article verifies the function of Half Rate speech and the way of half rate channel deployment,proves the impact on three respects of network capacity,quality and speech quality of turning on of function under the proportion in different half rate speech channel,and explores the way,method and tactics in which technology of half rate speech is applied in GSM network.

Based on the analysis of the related new technology such as AMR-HR,interference cancellation and TFO,this paper proposes the GSM network capability improvement schedule based on enhanced half rate so as to help increasing of the traffic bearer capability of network without adding of devise scale and loss of service quality.