例句與用法

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1. Training sequence code
   訓練序列碼
2. Space - time multiuser detection for ds - cdma communication in multiple input multiple output systems
   直接序列碼分多址的多輸入多輸出系統中的空時多用戶檢測
3. ( 6 ) the particular model of cdma communication system based on spatiotemporal chaos is proposed , which is based on the communication efficiency and the method of secure communication is given up . the results illustrate that the system possesses high security ability and strong synchronization ability , and is easy to be realized ; and chaotic cdma communication system is superior to gold one in the anti - jamming property
   ( 6 )針對系統的信息傳輸效率，提出了具體的基于時空混沌的碼分多址通信系統模型，給出了基于混沌序列的保密通信方法，并與gold序列碼分多址的系統性能做了比較。結果表明：混沌系統模型具有較高的保密特性和較強的同步能力，并且其抗干擾性能更好。
4. With the downlink simulation model constructed , performance of wideband cdma under different radio propagation environment and vehicular speed is simulated . based on system model of mc ds cdma under flat fading channel with relative shifts of spreading sequences within 1 chip and frequency selective fading channel with arbitrary relative chip shifts , performance of multicarrier cdma system with go sequences under different radio environment is investigated
   基于多載波直接序列碼分多址在乎坦衰落信道中序列偏移小于1個碼片及在頻率選擇性衰落信道中偏移任意個碼片的系統模型，本文還分析了采用廣義正交序列的多載波碼分多址系統在不同無線傳播環(huán)境下的性能。
5. In this thesis , the zero correlation zone ( zcz ) or generalized orthogonal ( go ) sequences are applied to direct - sequence cdma ( ds - cdma ) systems , and the corresponding system performance are analysed . topics on the correlation property analysis of hadamard walsh ( wh ) sequences , go sequences , and loosely synchronous ( ls ) sequences are performed , and the system model and performance evaluation of single - cell and multi - cell synchronous cdma ( s - cdma ) systems employing go sequences , and the applications of go sequences in quasi - synchronous cdma ( qs - cdma ) systems are elaborated
   本文研究了零相關區(qū)( zcz )或廣義正交( go )序列在直接序列碼分多址( ds - cdma )系統中的應用并給出了系統性能分析結果，包括hadamardwalsh ( wh )序列集、廣義正交序列集與松散同步( ls )序列集相關特性分析，采用廣義正交序列的單小區(qū)與多小區(qū)同步cdma ( s - cdma )系統模型與性能分析，以及廣義正交序列在準同步cdma ( qs - cdma )系統中的應用等問題。