decoding delay 中文意思是什麼
decoding delay
解釋
譯碼時延-
Causes small transmission delay, but computation is complex. the other is called dsova, which does not need to know csi, with low - computation complexity and small transmission delay, and is more suitable in the case when side information is unknown. these two algorithms effectively combine the ofdm technology and the sova algorithm in rayleigh channel, resulting in an efficient sova decoding under frequency - selective channel
另一種是不含通道估計的差分sova演算法（簡稱dsova ） ，該演算法不必知道csi ，計算復雜度低，傳輸時延小，適用於邊沿信息（ sideinformation ， si ）未知的情況，這兩種演算法將ofdm技術和rayleigh通道下的sova譯碼演算法有機的結合起來，很好地實現了頻率選擇通道下的sova譯碼。 -
The parameters include iterative decoding algorithms, interleave length, the times of iterative decoding and channel models. to reduce the decoding delay and the average iterative times, a few stop - iterative - criterias used as a rule are compared and analyzed, and an improved turbo - crc - sdr stop - criteria is brought forward
為了減少迭代譯碼時延及降低平均迭代次數，對常見的幾種迭代停止準則進行了分析比較，從中提出了一種改進的turbo - crc - sdr停止準則。 -
Re has a very complicated interconnections and needs a high power consumption. tb needs a large quantity of buffers and has long decoding delay. in this paper a modified register - exchange ( re ) method is presented, which reduce its memory access rate and its amount of memory, thus, reduces the power consumption
在smu中，由於要進行頻繁的存儲器讀寫，功耗很大，成為整個viterbi譯碼器中消耗功率最大的單元，因此對smu單元進行低功耗設計對降低viterbi譯碼器的功耗起著非常重要的作用。 -
It ’ s critical path delay is very little, and it operates in the fully - pipelined continuous decoding manner
它關鍵路徑延時很小，並且為全流水線連續解碼工作方式。 -
Space - time block codes ( stbc ) based on orthogonal design has attracts enough attentions in its applications in mimo - ofdm systems for its full diversity exploiting and low coding / decoding complexity. these applications include not only system performance improvement, but also reduction of the peak to average power ratio in mimo - ofdm systems. under these backgrounds, this paper first studies space - time block codes under the single carrier, flat fading situation, discusses the encoding / decoding principle and its performance under different channels. then, the author focused on the performance of space - time codes under time selective and frequency selective channels, uncovered the fundamental cause of how maximum doppler shift and power delay profile influences the performance of space - time codes through deduction and simulation
在上述背景下，本文以單載波，平坦衰落通道下的空時分組碼為切入點，深入分析了其編譯碼原理和在不同通道情況下的性能;以此為基礎，後文展開了對空時分組碼在多載波，時間選擇性和頻率選擇性衰落通道下的性能研究，通過理論推導和充分的模擬，揭示了空時/頻分組碼在時頻選擇性衰落通道中的性能變化的根本原因;在以上對多載波系統中空時分組碼的研究的過程中，作者發現了空時分組碼在降低系統峰平比方面應用的可行性，提出了一種降低峰平比的新方法。
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