In this dissertation , i make a systemic research on time domain equalization algorithm which is the key technology of dsl , and design adsl transceiver system on a chip 本論文對dsl技術(shù)中的關(guān)鍵技術(shù)時域均衡算法進(jìn)行了系統(tǒng)的研究,并進(jìn)行了adsl收發(fā)器片上系統(tǒng)設(shè)計。
A near mlse equalization algorithm based on va ( viterbi algorithm ) is presented for overcoming severe isi ( intersymbol interference ) in this paper 本文利用編碼的思想,在viterbi算法的基礎(chǔ)上提出了一種改進(jìn)的準(zhǔn)mlse均衡算法,它能有效的克服嚴(yán)重的碼間干擾。
Based on fractional sampling method , a new super - exponential iteration decision feedback blind equalization algorithm for severely nonlinear phase distortion channels was proposed 因此針對嚴(yán)重頻率衰落和非線性相位失真信道,提出了一種分?jǐn)?shù)采樣的混合盲均衡算法,并獲得了較快的收斂速度和較小的剩余均方誤差。
6 . the basic principle of turbo equalization is discussed and the siso equalization algorithms based on a posteriori probability and interference cancellation are derived . at last , the simulation results are provided 6 .論述了turbo均衡的基本原理,推導(dǎo)了基于后驗概率和干擾消除的5150均衡算法,給出了性能仿真結(jié)果。
A new variable step - size cma blind equalization algorithm is introduced to conquer the defects of cma , in which the step size is controlled by the estimation of error signal ' s autocorrelation 摘要提出了一種自適應(yīng)變步長恒模盲均衡算法,利用剩余誤差信號的自相關(guān)函數(shù)估計值作為控制步長的因子來自適應(yīng)改變步長的大小,克服了恒模算法存在的固有缺陷。
Blind equalization technology is a very popular research topic because it can adaptively equalize without training sequence . blind equalization algorithm based on hos ( higher - order statistics ) was presented and developed in 80 ' s 基于高階統(tǒng)計量的盲均衡算法在80年代末出現(xiàn)并得到發(fā)展,由于高階譜不僅含有信號的幅度信息,而且還含有相位特征。
The paper particularly analyzed the satellite resource management structure , satellite connect admission control and mac ( media access control ) protocol . then the proposed delay equalization algorithm was applied in this satellite network 論文通過對衛(wèi)星網(wǎng)絡(luò)資源調(diào)度管理結(jié)構(gòu)、衛(wèi)星接入以及mac ( mediaaccesscontrol )協(xié)議的研究,將提出的基于時延均衡的調(diào)度算法在衛(wèi)星網(wǎng)絡(luò)中實現(xiàn)。
So it is widely researched . for bussgang category blind equalization algorithm , it ' s quantity of calculate is small and convenient to real - time implement and better performance . so this article uses this category algorithm to implement the blind equalizer 其中bussgang類盲均衡算法的研究已經(jīng)取得了很多的成果,且它的計算復(fù)雜度小,便于實時實現(xiàn),具有較好的性能,因此本文選用該算法實現(xiàn)盲均衡器的硬件系統(tǒng)。
For the digital modulation recognizer , the blind identification and equalization algorithm based on second - order statistics is applied to equalize the received signals firstly , and then the modulation type used can be figured out according to the shape of the rebuilt constellation 對于數(shù)字調(diào)制方式,本文首先采用基于二階統(tǒng)計量的信道盲均衡算法對接收信號進(jìn)行均衡,再利用信號星座圖的形狀判別具體的調(diào)制類型。
In addition , for improving system ' s performance , the paper also research on the soft - output viterbi algorithm , especially on m - ary sova . also combining with m - ary sova and our near mlse algorithm , we introduce a soft - output near mlse equalization algorithm 為了進(jìn)一步提高算法的性能,本文還研究了軟輸出的viterbi算法,特別是多進(jìn)制下的sova算法,并將它和本文的均衡算法結(jié)合,提出了一種軟輸出的準(zhǔn)mlse均衡算法。