Single-frequency broadcasting receiving method based on TD-SCDMA network
A TD-SCDMA, broadcast receiving technology, applied in the field of mobile broadcast business, can solve problems such as incompatibility with broadcast business, and achieve the effect of reducing workload and power consumption
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[0018] The midamble formation of the TD-SCDMA single frequency network broadcast service is as follows: the single frequency network adopts the same basic midamble. At this time, from the TD-SCDMA single frequency network supporting mobile TV broadcasting, the basic midamble The downlink pilot code no longer has the concept of a code group; the pilot code in each time slot in the single frequency network has only one cyclic shift, and the cyclic shift mode no longer forms a corresponding relationship with the number of code channels; the length of the cyclic prefix of the midamble code is configurable , to accommodate large transmission delays from different base stations.
[0019] The midamble is formed as image 3 shown. by cyclic prefix 102 part L max +16 chips, and basic midamble 101 part 128-L max chip composition. Among them, L max It is a configurable number, generally between -8 and 48, preferably 16. In the midamble part of 144 chips, the basic midamble 101 part...
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