In pulse code modulation , the representation of the quantized samples of an analogue signal by character signals according to a defined code 在脈碼調(diào)制技術(shù)中,按照確定的代碼由字符信號(hào)對(duì)模擬信號(hào)量化采樣的表示法。
The pulse code modulation / frequency modulation ( pcm / fm ) is widely used in most reentry remote sensing ( rrs ) system at the present time in our country 目前我國(guó)再入遙測(cè)系統(tǒng)主要采用脈沖編碼調(diào)制/調(diào)頻( pcm / fm )體制。
Research shows that the pulse code modulation ( pcm ) , the operating system of the cd , has limitations that so far cannot be overcome 脈膊把調(diào)音( pcm )編碼的研究表演,那操作激光唱碟的系統(tǒng),有限制以到現(xiàn)在為止不能夠被克服。
The bit - interleaved coded modulation with iterative decoding for bandwidth - efficient transmission over rayleigh fading channel is studied 該方案利用ldpc碼校驗(yàn)矩陣作為系統(tǒng)迭代終止判決準(zhǔn)則,可大幅度降低譯碼算法的平均復(fù)雜度。
Then the text describes the principle of the pivotal technique - pulse code modulation ( pcm ) in detail which realizes the conversion of the exchange from simulation to digital 然后詳細(xì)介紹了實(shí)現(xiàn)交換機(jī)由模擬向數(shù)字轉(zhuǎn)變的關(guān)鍵技術(shù)? ?脈沖編碼調(diào)制( pcm )技術(shù)的原理。
Intelligent pulse code modulation ( inpcm ) , one of the new access device , is a promising hi - teach boasting of economization , and need network management to realize its intelligence 智能pcm ( inpcm )是一種具有廣闊發(fā)展前景的新型接入設(shè)備,需要網(wǎng)絡(luò)管理系統(tǒng)來(lái)實(shí)現(xiàn)其智能化。
Telecommunications - digital processing of voice - band signals - line format for 32 - kbit s adaptive differential pulse - code modulation channel - control templates and robbed - bit signaling alarm transmission 電信.音頻信號(hào)的數(shù)字處理. 32 - kbit s自適應(yīng)差動(dòng)脈沖代碼調(diào)制adpcm用線路格式
Simulation results reveal that ipos protocol could solve the problem of high error bit rate with adoption of the error control scheme in the data link layer and adaptive coding modulation 仿真結(jié)果表明, ipos協(xié)議通過(guò)采用鏈路層差錯(cuò)控制和自適應(yīng)編碼調(diào)制方法,解決了衛(wèi)星信道的高誤碼率現(xiàn)象。
Coded modulation technique is a hot issue in code field in recent 20 years . it appeared in 1982 when ungerboeck proposed tcm theory . and then it apply widely soon 編碼調(diào)制是近二十年來(lái)編碼界的一大熱點(diǎn),它的出現(xiàn)是以u(píng)ngerboeck在1982年提出網(wǎng)格編碼調(diào)制( tcm , trelliscodedmodulation )理論為標(biāo)志。
But for the same reason , it have n ' t the same diversity feature as space - time block code , as well as it have n ' t the same error correction capability as convolutional code or trellis code modulation 由于空時(shí)格碼兼顧了分集和信道編碼,導(dǎo)致其分集特性不如空時(shí)分組碼,糾錯(cuò)能力不如卷積碼和格形編碼調(diào)制。