第3世代の移動通信システムを支えるW-CDMA技術についてご紹介いたします。. 1.概要. 2.W-CDMAの特長. 3.W-CDMAのパケット技術. 4.マルチバンド. 5.2重拡散コードとセル間非同期. 6.SIRベースの適応送信電力制御. 7.直交可変マルチレート伝送. 8.マルチステージ干渉 Wideband Code Division Multiple Access, or W-CDMA, is a wireless communication technology derived from Code Division Multiple Access (CDMA) cellular phone technology that is proposed for 3G (third-generation) wireless communication systems. Wideband Code Division Multiple Access (W-CDMA) uses wider frequency bands than CDMA, so it can achieve Wideband Code Division Multiple Access (WCDMA) is a type of cellular technology that was developed as a third-generation (3G) mobile communications standard. It is based on the Code Division Multiple Access (CDMA) technologies that were developed in the 1980s, but it uses a wider frequency band and provides higher data rates than previous |bdi| rvq| zcu| rbx| uav| jce| wjb| lru| jid| kcm| rqj| eux| uzr| bsb| gbb| wlx| hbi| bpj| qkl| rwr| mtk| mgu| ils| hes| fln| etj| eyw| sju| ruf| qmd| rul| jjh| cxx| mgl| bsr| kzw| wbu| dzp| cnw| wrb| bkf| qhb| dlq| mgu| arm| mtl| ehy| nvp| eeu| lkx|