发明名称 |
SYNCHRONIZATION AND EQUALIZATION IN A TDMA CELLULAR SYSTEM |
摘要 |
In a Time Division Multiple Access (TDMA) cellular system, there is provided a mechanism for synchronization and equalization comprising: providing synchronization information (S/S) sufficiently removed from the start of a TDM slot so as to maintain the integrity of that synchronization information (S/S) at adjacent cells and providing that synchronization information (S/S) not so far removed from the start of the slot as to necessitate adaptive equalization of information preceding the synchronization information (S/S) for sufficiently reliable recovery. The equalization is further enhanced by providing, roughly mid-way between the synchronization information (S/S) and the end of the slot, additional information (CC) upon which equalization may retrain. Accordingly, equalizers perform retrospective, non-adaptive equalization of information preceding the synchronization information (S/S), perform adaptive equalization of information following that synchronization information (S/S), and retrain utilizing known bit-sequences elsewhere within the TDM slot; the additional information (CC) comprises known bit-sequences identifying cells. |
申请公布号 |
CA2063421(C) |
申请公布日期 |
1997.09.09 |
申请号 |
CA19902063421 |
申请日期 |
1990.06.22 |
申请人 |
MOTOROLA, INC. |
发明人 |
LEVINE, STEPHEN NORMAN;PUHL, LARRY CHARLES;GOODE, STEVEN HOWARD;CARNEY, SCOTT NELSON |
分类号 |
H04Q7/38;H04B7/005;H04B7/26;H04J3/00;H04J3/16;H04L7/00;H04M11/00;H04Q7/00;H04Q7/22;H04Q7/24;H04Q7/26;H04Q7/30;(IPC1-7):H04J3/06;H04B7/212 |
主分类号 |
H04Q7/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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