Compared to the three or double channels tracking system , this system can reduce the system cost by half or more , and some extra technology demands can be ignored 比之三通道單脈沖或雙通道單脈沖技術(shù),它的信道設(shè)備量減少了三分之二或者二分之一,而對多信道的一些技術(shù)要求已可以不必考慮。
The author analyzed layered coding , multi description coding , technology of recover and hiding of errors , providing the approach " a approach of a multi description coding base on space domain dividing " , and then give a experiment to testify it 作者在文中較為詳細(xì)的分析介紹流媒體編碼中的分層編碼、多描述編碼和錯(cuò)誤恢復(fù)隱藏機(jī)制,提出“基于空域分離多信道的多描述編碼方案” ,并佐以實(shí)驗(yàn)數(shù)據(jù)驗(yàn)證。
For power control of listening users , forward power control method are introduced based on full , multichannel , filtered report , and collision method etc . the full report method has redundancy report information , and its real - time performance is bad , multichannel report is introduced to improve the real - time performance , and filtered report is introduced to eliminate the redundancy information , finally the collision method introduced can not only get higher real - time performance but also diminish the redundancy information ; 2 . in order to meet the requirements of making the dynamic simulation of trunking group system , the ms ’ s random move equation is brought forward , the simulation of ms ’ s distribution is done and the integrated channel model are presented ; 3 . the smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network , with this model , the power control ‘ s performance is greatly improved 全匯報(bào)方法存在冗余的匯報(bào)信息,而且實(shí)時(shí)性較差,為了改善實(shí)時(shí)性提出了多信道的匯報(bào)方式,為了改善冗余匯報(bào)而提出了篩選法,最后介紹的碰撞法在減少冗余信息的同時(shí)又提高了實(shí)時(shí)性;二、為了集群功率控制動(dòng)態(tài)仿真的需要,提出了移動(dòng)臺的隨機(jī)運(yùn)動(dòng)方程,進(jìn)行了有關(guān)移動(dòng)臺的分布仿真,建立了綜合的信道模型;三、希望克服延時(shí)和跟蹤復(fù)雜網(wǎng)絡(luò)環(huán)境變化,提出了功率控制的智能預(yù)測模型,通過智能預(yù)測模型可以改善功率控制的性能,著重介紹了采用神經(jīng)網(wǎng)絡(luò)的方法實(shí)現(xiàn)智能預(yù)測的通用模型,從而跟蹤復(fù)雜多變的無線環(huán)境,諸如慢衰落及快衰落(包括多徑衰落、多普勒效應(yīng)所引起的衰落)等網(wǎng)絡(luò)特征,達(dá)到預(yù)測功率需求;四、采用二級正交碼和智能天線(空分多址)的方法進(jìn)行組內(nèi)用戶的識別,改進(jìn)功率控制效果;五、話權(quán)用戶的前向和反向功率控制方法;六、對引入gota的cdma系統(tǒng)提出了復(fù)合容量表示方法,并作容量分析,探討有關(guān)gota系統(tǒng)的qos問題。