To increase the slot throughput and shorten the network ' s delay , the author analyzed all kinds of existent bandwidth allocation algorithm . according to the theoretical deduction , the author concluded the relation between the slot throughput , the number of arrived request packets and the number of allocated contention slots . thereout , he put forward an upstream channel bandwidth allocation algorithm based on the estimation of the request packet ' s arrival ratio ( ) 论文以增大时隙吞吐量、减小网络时延为目标,分析了前人提出的各种算法,在理论推导的基础上,得出了时隙吞吐量s和到达网络的请求分组数及分配的竞争时隙数之间的关系,并由此提出了一种基于对请求分组到达率估值进行带宽分配的算法。
Recent progress in radio prototype has extended the horizons of radio technology by liberating chronics dependence on hard - wired characteristics including frequency band , channel bandwidth , and channel coding . these efforts have led us to the feasibility of dynamically programmable receivers system of software radio 软件无线电系统的硬件结构与功能相对独立,这样就可以基于相对通用的硬件平台,通过软件实现不同的通信功能,并可对工作频率、系统频带、调制方式等进行编程控制,系统的灵活性大大增加。
In mobile communication and high - speed wireless digital communication , multi - path , the finity of channel bandwidth and faultiness of the channel , lead to the bringing of intersymbol interference ( isi ) when data transfer . this is an important factor that degrades the performance of communication . however channel equalization technique can eliminate the isi and noise , it can also reduces the bit error ratio 在移动通信及高速无线数据通信中,多径效应和信道带宽的有限性以及信道特性的不完善性导致数据传输时不可避免地产生码间干扰( isi ) ,成为影响通信质量的重要因素,而信道的均衡技术可以消除码间干扰和噪声,并减少误码率。