Simulation results show that the algorithm can improve the performance of turbo codes decoding 仿真結(jié)果表明,此譯碼算法可以改善turbo碼的譯碼性能。
Chapter three shows the software flow process of turbo decoding ( mainly constituent code decoding ) algorithms 第三章介紹了turbo譯碼(主要是成員碼譯碼)算法的軟件實現(xiàn)流程。
Move digits displayed to one display box , more easier to view error code . could modify bios port 80h post code decode address to other port address , 不同處:乃cv - 06p之?dāng)?shù)字顯示器被置于一小塑膠盒內(nèi),如此即能任意移動,和
This class of codes decoded with soft - in soft - out ( siso ) iterative decoding performs amazingly well . since their rediscovery , design , construction , decoding , analysis and applications of ldpc coded have become focal points of research Ldpc碼是一種具有稀疏校驗矩陣的線性分組碼,研究結(jié)果表明,采用迭代的概率譯碼算法, ldpc碼可以達(dá)到接近香農(nóng)極限的性能。
Low density parity - check ( ldpc ) codes were first discovered by gallager in the early 1960s and recently have been rediscovered and generalized . this class of codes decoded with soft - in soft - out ( siso ) iterative decoding performs amazingly well 低密度奇偶校驗碼( ldpc )碼是由gallager在1962年首先提出的一種糾錯碼,在沉寂了多年之后,最近又重新成為通信技術(shù)研究的熱點。
The iterative decoding of ldpc code must use the noise variance , so the variance estimation is important for the ldpc code decoding . by the computer simulation , we find that the impact of the estimation algorithm for the ldpc code performance is less than 0 . 2db 通過計算機(jī)驗證得到,利用這種算法估計出的誤差對碼字的性能不會有大的影響,在最差的情況下對spa譯碼算法和改進(jìn)的wbf算法的影響都不會超過0 . 2db 。
" numeral monitor and control system " is introduced on top of that . coding , storing and decoding processes of numeral information are introduced in emphases . which information comes into being after picture taken from camera has been gathered , estimated and coding decoding by gathering card 本文首先介紹數(shù)字視頻的軟件壓縮標(biāo)準(zhǔn),然后詳細(xì)地介紹了mpeg - 4編解碼過程,緊接著對數(shù)字錄像監(jiān)控系統(tǒng)進(jìn)行介紹,重點介紹了監(jiān)控系統(tǒng)中攝像頭錄入的視頻圖像經(jīng)視頻采集卡采集、量化后形成的數(shù)字信息的編碼存儲以及解碼輸出的過程。
This product usesthe fm radio set code decoding system , has the ultra strongantijamming ability and the extremely low power loss , the reactionrate is keen , the highest synchronous speed amounts to for 1 1 , 000second , can satisfy photographic camera of each kind of type shuttersynchronized flash photography request 該產(chǎn)品采用調(diào)頻無線電編碼解碼系統(tǒng),有超強的抗干擾能力和極低的功耗,反應(yīng)速度靈敏,最高同步速度達(dá)1 1000秒,能滿足各種類型快門之照相機(jī)的同步閃光拍攝要求。