发明名称 |
POST PROCESSING OF SPREADING CODES IN A MOBILE TELECOMMUNICATIONS SYSTEM |
摘要 |
In mobile telecommunications systems, such as UMTS, user communications can be transmitted in parallel within a single timeslot by spreading the different user communications amongst a plurality of orthogonal spreading codes. Each spreading code has a characteristic spreading factor. The communications transmitted in each timeslot are joint detected and de-spread into the original user communications by a joint detection algorithm. There is provided a method of post-processing the results of the joint detection algorithm when the spreading factors are unknown. The method of post-processing operates without the need to apply the joint detection algorithm more than once. Consequently, spreading codes with different spreading factors can be used in one timeslot.
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申请公布号 |
WO0165715(A2) |
申请公布日期 |
2001.09.07 |
申请号 |
WO2001GB00846 |
申请日期 |
2001.02.28 |
申请人 |
ROKE MANOR RESEARCH LIMITED;JOHNSON, DAVID |
发明人 |
JOHNSON, DAVID |
分类号 |
H04B1/707;H04J11/00;H04J13/00;(IPC1-7):H04B1/707 |
主分类号 |
H04B1/707 |
代理机构 |
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地址 |
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