本文選題：超奈奎斯特(FTN)傳輸信號(hào) + 低復(fù)雜度��； 參考：《北京航空航天大學(xué)學(xué)報(bào)》2017年05期

【摘要】：超奈奎斯特(FTN)傳輸技術(shù)是一種高頻譜效率的信號(hào)傳輸方式。針對(duì)FTN信號(hào)存在的碼間串?dāng)_,基于軟輸出維特比算法(SOVA)提出FTN信號(hào)的低復(fù)雜度接收算法。根據(jù)幸存路徑和競爭路徑的判決結(jié)果,動(dòng)態(tài)地調(diào)整每個(gè)時(shí)刻回溯過程的比較次數(shù),降低比較次數(shù)平均值。在實(shí)際應(yīng)用中,根據(jù)不影響誤碼性能的統(tǒng)計(jì)經(jīng)驗(yàn)值直接截短回溯路徑的長度。直接截短回溯深度算法可在不惡化誤碼率(BER)的前提下,降低比較運(yùn)算次數(shù)2/3,同時(shí)減少回溯過程所需寄存器資源和延時(shí)50%以上。
[Abstract]:Ultra-Nyquist FTNtechnology is a kind of signal transmission mode with high spectral efficiency. Based on the soft output Viterbi algorithm, a low complexity reception algorithm for FTN signals is proposed for inter-symbol crosstalk (ISI). According to the decision results of survival path and competition path, the comparison times of each time backtracking process are dynamically adjusted, and the average comparison times are reduced. In practical application, the length of the backtracking path is directly truncated according to the statistical experience value which does not affect the performance of the error code. The direct truncated backtracking depth algorithm can reduce the number of comparison operations by 2 / 3 without worsening the bit error rate (BER) and reduce the register resource and delay of the backtracking process by more than 50%.
【作者單位】： 北京航空航天大學(xué)電子信息工程學(xué)院;
【基金】：國家自然科學(xué)基金(91438116) 上海航天科技創(chuàng)新基金(SAST2015089)~~
【分類號(hào)】：TN911.5
，

本文編號(hào)：1861052