【摘要】 TD-SCDMA(时分-同步码分多址)是我国提出的具有自主知识产权的3G标准,它和CDMA2000、WCDMA同为ITU确定的3G三大主流标准。首先简要介绍了TD-SCDMA系统的特点,然后分析了TD-SCDMA的增强型技术HSDPA(高速下行链路分组接入)。HSDPA是3GPP为了满足上下行数据业务不对称的需求提出的一种新技术,它大大地增加了下行数据业务的传输速率。最后介绍了TD-SCDMA的长期演进(LTE)。更多还原

【Abstract】 As a standard of 3G proposed by China with proprietary intellectual property rights,TD-SCDMA is a standard among the main three standards of 3G with CDMA2000 and WCDMA.In this paper,TD-SCDMA system and its characteristic are firstly introduced.Then as the enhancement technology of TD-SCDMA,HSDPA is analyzed.HSDPA is a new technology formulated by 3GPP to meet different needs between uplink and downlink service,and it increases downlink data rate greatly.Finally,the paper introduces the LTE(long term evolution) of TD-SCDMA.更多还原