It has adaptive flexibility, high capacity, high bandwidth efficiency and interference robustness 具有自适应灵活性、高容量、高频谱利用率、抗干扰的优点。
To increase the bandwidth efficiency, such a system scheme use the msk modulation method combining with a premodulation filter 文中讨论了以msk调制技术结合预调滤波器提高带宽效率的系统构建方案。
The advantages of the modulation method omsk ( the gaussian pre-filtered minimum shift keying ) include bandwidth efficiency and constant envelope gsm系统中采用了gmsk调制方式,gmsk调制恒定包络,具有较高的频谱利用率。
Frequency hopping technology has the capabilities of anti-interference and anti-interception . and it can increase the bandwidth efficiency as well 跳频通信是扩频通信的一种,具有抗干扰、抗截获的能力,并能作到频谱资源共享。
In wireless communication, increasing bandwidth efficiency to transfer more data in the band-limited channel always is a task deserve for attention 无线通信中,提高带宽效率,在有限的信道带宽中传输更多的数据一直是个令人关注的问题。
Besides high bandwidth efficiency, there are many other advantages in ofdm . but it also has two disadvantages-peak average power rate and sensitivity to frequency skew 但是ofdm也有功率峰值功率比过大以及对频偏敏感等缺点,在应用的时候需要采用各种方法来克服。
We will discuss the construction of a digital transmission system with high bandwidth efficiency and good error rate performance . in the condition of 25khz wireless channel 本文主要讨论在25khz信道条件下建立一个具有高带宽效率和较好误码性能的无线数字传输系统。
Due to a variety of advantages, such as high bandwidth efficiency and excellent anti ? multipath performance, orthogonal frequency division multiplexing ( ofdm ) has received considerable attentions and been widely used in many fields 正交频分多路复用(ofdm)因具有频带利用率高和抗多径能力强等优点,近年受到广泛的重视。
According to the simulation result, the bandwidth efficiency brought by different pemodulation filters and the isi cause by them are analyzed and compared . then the system error rate performance is also analyzed in the article 文中通过仿真结果着重分析和比较了不同的预调滤波器带来的带宽效率和码间干扰后,进一步分析了它们对系统误码性能的影响。
In our protocol, uniform spacing and segmentation polices make algorithm adjust with the change of loading situation dynamically, which suppresses cell jitter pretty well and also improves the bandwidth efficiency 本文给出分段均匀间隔mac协议,均匀间隔和分段分配带宽的策略可以使协议自动地随负载状况变化而调整,既很好地控制了抖动,又提高了带宽效率。