transmitter n. 传送者;传达者;寄交者;传导物;遗传者;【无线电】发送机;发射机;发报机;送话机,话筒;【火箭】发射机。 hit the transmitter 〔美国〕播送。 an inset transmitter 送话器盒,炭精盒。 a light-beam transmitter 光束扫描发射机。 television transmitter 电视发射机。
multiple adj. 1.多重的;复合的,复式的,多数的,多样的。 2.倍数的,倍。 3.【电学】并联的;多路的,复接的。 4.【植物;植物学】聚花的。 a man of multiple interests 兴趣广博的人。 n. 1.【数学】倍数。 2.【电学】并联;多路系统。 3.相联成组。 4.成批生产的艺术品〔画、雕塑、工艺品等〕。 common multiple 公倍数。 least common multiple 最小公倍数。
At the same time, a simple channel estimator that can suppress the peak-to-average power ratio ( papr ) for ofdm system with multiple transmitter antennas is proposed, its simulation proves again the result . ( 5 ) ofdm receiver is proposed with multiple transmitter antenna and alamouti scheme 结果表明,多个独立天线ofdm系统的性能明显优于单天线的ofdm系统;同时还给出了一种简单的能有效抑制峰值功率平均功率比(papr)且适于多发射天线ofdm系统的导频符号辅助的信道估计方法,仿真结果再次证明了上述结论。
At the same time, a simple channel estimator that can suppress the peak-to-average power ratio ( papr ) for ofdm system with multiple transmitter antennas is proposed, its simulation proves again the result . ( 5 ) ofdm receiver is proposed with multiple transmitter antenna and alamouti scheme 结果表明,多个独立天线ofdm系统的性能明显优于单天线的ofdm系统;同时还给出了一种简单的能有效抑制峰值功率平均功率比(papr)且适于多发射天线ofdm系统的导频符号辅助的信道估计方法,仿真结果再次证明了上述结论。
The assumption that the channel is known is questionable in a rapidly changing mobile environment, or when multiple transmitter antennas are employed . unitary space-time codes and differential unitary space-time codes do n't need any channel information . we discuss the unitary space-time codes briefly and study the details of the dustc, including the fundamental differential transmission and receiver equation, and parameters searching algorithm . the parameters searching and simulations results is proposed 酉空时编码及酉差分空时编码(dustc)都不需要信道信息,着重研究了酉差分空时编码技术,简要说明了酉空时编码的信号形式及星座设计方法;分析了dustc的发送和接收公式,分析了dustc的严格pep和sep的联合界,给出了当snr值在不同的范围时,dustc星座参数的选取准则,并进行了rayleigh衰落信道的仿真。