Question

求翻译一下 谢谢

2. Physical layer structure of the TD-SCDMA system
TD-SCDMA is a time duplex division system. The uplink and thedownlink operate on the same frequency band. All physical channels have afour-layer structure, i.e., superframes, radio frames, subframes, and timeslots/ codes [24]. The chip rate is 1.28 Mchip/s. A superframe has 72 radioframes and a radio frame has two subframes . Each subframe has 6400 chips, asshown in Fig. 1. A subframe is partitioned into 7 main time slots (TS) of 675msduration.There are three special timeslots: downlink pilot (DwPTS), guardperiod (GP) and uplink pilot (UpPTS). Each main time slot consists of two data symbolfields, a midamble of 144 chips and a guard period of 16 chips. During theuplink, a maximum of 16 users’ data is transmitted within a single time slot.
The midambles of different users who are active in one timeslot are time-shifted versions of a single periodic basic code. Once uplink anddownlink are completed, the midamble is known to both the mobile terminal andBS, which can be used as a training sequence. For location purpose, midamblesare used for uplink AOA estimation and uplink TOA estimation in this paper.
and uplink TOA estimation in this paper. Here we must mentionthat the air interface does have impact on location estimation scheme. In otherwords, the location parameters estimation algorithms, i.e., the AOA and TOAestimation, must be specially specified according to network modes. Forexample, for TD-SCDMA, the number of active users in one time slot is limitedto 16, i.e., the spreading factor is not more than 16. And, dynamic channelallocation (DCA) attempts to allocate azimuth adjacent users to a differenttime slot, to reduce interference. This means that the AOAs of all active usersmay be conveniently tracked by the smart antenna techniques. But the situationmay be different for WCDMA because the number of active users in one time slotmay be up to hundreds. So many active users may be close to each other. It willbe difficult for the antenna to distinguish adjacent users. In this paper, theAOA and TOA estimation benefit from the TD-SCDMA air interface. The detailedalgorithms are investigated in following two sections.

Answer 1

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この夜も
安眠できない
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骨格の白より
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肋骨の再配置
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たとえ雾にも见える
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微笑を止め
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抉り取ることか
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どこにもない
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切り舎て
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その涙がそれをきらきら
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舍てる
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微笑を止め
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抉り取ることか
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どこにもない
それは称賛はまだ远い
私をだまさないで
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十分にあたしを
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彼女は称賛はまだ远い
私をだまさないで