How to Save the Occupied Transponder Bandwidth in the Satellite Communication Design of Rural Telecommunication System 系统设计中如何节省转发器带宽的占用
Kinds of communication tools have embedded into common life. Communication tool occupied frequency bandwidth, the demands of radio spectrum grow stably, the frequency conflict is more rigorous. 各种通讯工具已经深入日常生活,通讯工具需要占用一定的频率带宽,因此对无线电频谱需求不断增加,频率冲突越来越严峻。
In order to protect the normal use of other users, operators need to put in a lot of funds for network construction because of P2P software occupied a great of the bandwidth. 但是对于宽带运营商,这些P2P软件占用带宽很大,为了保障其他用户的正常使用,运营商需要投入大量的资金用于网络建设。
In the module of data transmission, have realized network programming based on winsock technical, adopted technology of multi-processing and multicast transmission, then improved the processing speed and reduced occupied bandwidth. 在数据传输模块的实现中,基于Winsock技术实现了网络编程,采用了多线程处理和组播传输技术,提高了处理速度并降低了占用带宽。
Finally, the system have been tested, under rate of 30 frames per second, image is fluent, reached lip phone synchronization, group meeting of six people probably occupied 300Kb/ s terminal bandwidth. 最后对系统进行了测试,在30帧/秒的速率下,图象较为流畅,基本达到唇音同步,6人的会议组大概占用300Kb/s终端带宽。
Occupied bandwidth ( OB) and necessary bandwidth ( NB) are discussed, and it is emphasized that the research on "breaking through Nyquist rate" must be done in the sense of NB. 提出占用带宽和必要带宽的概念,指出突破Nyquist速率的研究必须基于必要带宽才有意义。
Massive network of information greatly occupied network bandwidth, reduced network transmission rate, so must have very good information compression coding standard to reduce storage space. 海量的网络信息大大占用了网络带宽,减少了网络传输码率,要有非常优秀的压缩编码标准来减少信息的存储空间。
In recent years, with the popularity of P2P software, the P2P software has occupied the Internet bandwidth resources excessively, which causes the network congestion and impedes the operation of the normal Internet business. 近年来随着P2P软件的普及,P2P软件对互联网带宽资源的过度占用引起的网络拥塞妨碍了正常互联网业务的运营。
Simulation results show that: under the condition that the occupied bandwidth and the information rate are equal, the anti-noise performance of the communication system based on chaos M-ary modulation and demodulation method can achieve the theoretical limit of the ideal incoherent OOK receiver. 结果显示:在带宽和码元速率相同的情况下,混沌振子多进制调制解调通信系统的误码率性能能够达到传统非相干OOK接收机的理论极限。
At the same time, compared with the narrowband service, broadband service occupied much more bandwidth and spectrum economic dropped significantly. 同时与窄带业务相比,宽带业务的占用带宽大幅上升、频谱经济性显著下降。
P2P type applications on the network has become the most network resources occupied by a class of applications, P2P applications for network bandwidth resources, the erosion of the operators and end users a great impact. P2P类应用已经成为网络上最占用网络资源的一类应用,P2P应用对网络带宽资源的侵蚀,对运营商和最终用户造成很大的影响。
However, the advantages are occupied by an exchange of large bandwidth. So it is restricted in the band limited environment. 但是扩频通信的这一优点是以占用很高的传输带宽来换取的,在频带受限的环境中受到一定的限制。