发明名称 A hybrid CDMA and TDMA radio access scheme for personal satellite communication systems
摘要 To accomplish the object of high user capacity and high power efficiency, the invention is characterized in that the base station transmits control information in the forward link to each of the at least one user terminals for enabling the user terminal to transmit its signals in the return link in a mode to reach signal arrival at the base station that is quasi-synchronous with respect to the time and frequency reference in the base station. <IMAGE>
申请公布号 EP1091506(A3) 申请公布日期 2001.05.16
申请号 EP20000810686 申请日期 2000.07.31
申请人 ASCOM SYSTEC AG 发明人 WIDMER, HANSPETER
分类号 H04B7/185 主分类号 H04B7/185
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