数字技术与应用
數字技術與應用
수자기술여응용
DIGITAL TECHNOLOGY AND APPLICATION
2014年
9期
21-23
,共3页
WiMAX%正交频分复用%载波聚合
WiMAX%正交頻分複用%載波聚閤
WiMAX%정교빈분복용%재파취합
WiMAX%orthogonal frequency division multiplexing%carrier aggregation
采用正交频分复用技术的WiMAX系统,能够显著提高频谱利用率。为了支持更高的数据速率,需要扩展传输带宽。载波聚合技术通过将多个成员载波连接在一起,能够提供更大的传输带宽。本文针对230 MHz的WiMAX系统,在对频谱使用情况进行测试的基础上,采用连续载波聚合方法,扩展传输带宽。相比离散载波聚合方法,连续载波聚合方法具有更低的系统复杂度,便于实际应用。
採用正交頻分複用技術的WiMAX繫統,能夠顯著提高頻譜利用率。為瞭支持更高的數據速率,需要擴展傳輸帶寬。載波聚閤技術通過將多箇成員載波連接在一起,能夠提供更大的傳輸帶寬。本文針對230 MHz的WiMAX繫統,在對頻譜使用情況進行測試的基礎上,採用連續載波聚閤方法,擴展傳輸帶寬。相比離散載波聚閤方法,連續載波聚閤方法具有更低的繫統複雜度,便于實際應用。
채용정교빈분복용기술적WiMAX계통,능구현저제고빈보이용솔。위료지지경고적수거속솔,수요확전전수대관。재파취합기술통과장다개성원재파련접재일기,능구제공경대적전수대관。본문침대230 MHz적WiMAX계통,재대빈보사용정황진행측시적기출상,채용련속재파취합방법,확전전수대관。상비리산재파취합방법,련속재파취합방법구유경저적계통복잡도,편우실제응용。
Spectrum efficiency can be significantly improved by using orthogonal frequency division multiplexing technology in WiMAX system. In order to support a higher data rate, transmission bandwidth needs to be extended. Multiple component carriers are connected together by adopting carrier aggregation technology, which can provide wider transmission bandwidth. In this paper, on the basis of testing result on spectrum utilization, continuous carrier aggregation method is used to broaden the transmission bandwidth in 230 MHz WiMAX system. Compared with discrete carrier aggregation method, continuous carrier aggregation method has a lower systematic complexity, which is convenient for application.