例句與造句

1. Recently , multiple input multiple output ( mimo ) system which originates from the employment of multiple antennas at transmitter and receiver has many advantages such as large system capacity , high spectral efficiency . on the other hand , orthogonal frequency division multiplexing ( ofdm ) which bases on the orthogonal transmission of sub - carriers also has some obvious merits such as strong anti - multipath ability , high spectral efficiency . the combination of the two techniques mimo - ofdm , has become a hotspot recently and regarded as promising technique for future next - generation mobile communication systems
   近來,在無線通信系統(tǒng)中的收發(fā)兩端同時使用多根天線的多入多出( mimo , multiple - input - multiple - output )通信結(jié)構(gòu),具有系統(tǒng)容量大、頻譜效率高等優(yōu)點;基于正交的多路子載波并行傳輸?shù)恼活l分復(fù)用( ofdm , orthogonalfrequencydivisionmultiplexing )技術(shù),具有抗多徑能力強、頻譜效率高等優(yōu)點,二者的結(jié)合,即mimo - ofdm技術(shù),被認(rèn)為是構(gòu)建下一代移動通信系統(tǒng)的框架技術(shù)。
2. It's difficult to find orthogonal transmission in a sentence. 用orthogonal transmission造句挺難的