Chapter 7 introduces the other two space - time codes besides space - time block codes - space - time trellis codes and space - time layered codes 第七章簡(jiǎn)單介紹了除空時(shí)分組碼之外的兩大類空時(shí)碼,空時(shí)格狀碼和分層空時(shí)碼。
After reviewing compression algorithms in sar , the author introduces a new compression algorithm : trellis coded quantization ( tcq ) 論文在回顧了以往sar使用的原始數(shù)據(jù)壓縮算法后,引入了一種新的數(shù)據(jù)壓縮編碼算法:柵格編碼量化( tcq ) 。
In chapter 4 , space - time trellis coding ( sttc ) is studied . an exact pairwise error probability is derived for space - time codes operating over rayleigh fading channels 在第四章中,研究了空時(shí)格狀編碼的問題,推出了誤碼概率的確切表達(dá)式。
At last , conclusions are drawn on these algorithms . based on scalar quantization of chapter 2 , chapter 4 introduces trellis coded quantization to improve quantization gain 第四章是在第二章標(biāo)量量化的基礎(chǔ)上引入網(wǎng)格編碼量化的方法以進(jìn)一步提高量化增益。
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。