例句與造句

1. in practice, it is difficult to keep orthogonal signal constellation between different users . so there always exists mai in ds / cdma system, which limits system capacity
   但實(shí)際中，很難保證到達(dá)接收端的各用戶信號的完全正交性，由此而產(chǎn)生的多址干擾極大的限制了系統(tǒng)容量。
2. this paper is mainly considered : 1 ) how joint coded modulation transmitter is designed based on the iterative decoder . 2 ) the combination of ldpc code with bit-interleaved coded modulaton . 3 ) the optimization of two dimensional signal constellations in joint coded modulation with iterative decoder
   本文研究工作的重點(diǎn)在于:1)迭代譯碼對聯(lián)合編碼調(diào)制方案設(shè)計(jì)的影響;2)新的糾錯(cuò)編碼和比特交織編碼調(diào)制的有機(jī)結(jié)合;3)高階星座的最優(yōu)化問題。
3. It's difficult to find signal constellation in a sentence. 用signal constellation造句挺難的