The method is given to solve the problem in adaptive demodulation that adjudgement will worsen when the snr is low . by using the error signals to reduce the demodulated signals , the bit error rate will be improved 仿真中,针对dpsk信号的自适应解调中小信噪比下门限失效的问题,提出了利用误差改进门限判决的方法,将误码性能提高了1 2db 。
Then , we proposed a new qos protocol , qgr , based on the greedy geographic routing and dynamic source routing . qgr protocol searches the best route for the packet using energy 、 packet delay and bit error rate of manet as qos parameter Qgr协议是一种qos路由协议,以传感器网络的能量、延迟、位错误率等特征作为qos参数,实现相对于某一种参数最优的路由路径的查找。
( 1 ) for wireless physical layers , the efficiency function is defined to quantify the upper layer throughput per unit of wireless resources while maintaining a certain maximum remnant bit error rate subjected to a certain snr ( 1 )针对无线物理层,引入效率函数来表征在一定残余误码率ber要求和一定信道信噪比snr情况下,上层应用正确传输的数据量和下层无线资源的关系。
Conclusions can be made that nlms equalizer is the best among three equalizers in terms of convergent stability and calculating complexity , kalman equalizer is the best among three equalizers in terms of bit error rate 仿真试验结果表明,在这三种均衡器中,从收敛稳定性和计算复杂度上来看最适合的是nlms线性均衡器;从系统误码率上来看,最适用的是kalman线性均衡器,其次是nlms线性均衡器。
The multipath interference , resulted from interfering between the signals of the line of sight ( los ) and the line of ground reflection in vhf - rc , makes bit error rate of data transmission increased and system reliability attenuated 当前,中国水波中继信道以直视路径传播为主,同时存在地面折射路径对直射信号产生干涉,造成多径干扰。这种干扰使得信号传输的误码率上升,系统可靠性下降。
In digital transmission, the number of bit errors is the number of received bits of a data stream over a communication channel that have been altered due to noise, interference, distortion or bit synchronization errors.
bit error rateとは意味:bit error rate ビット誤り率 ビットあやまりりつ bit error rate meaning:[Computer] < data , digital , communications > (BER) The fraction of a message or block of data that is wrong.bit error rate en francais:((ber, blert), technique de détection d'erreurs qui compare une structure de donnés reçue avec une structure de données transmise connue pour déterminer la qualité de la ligne de transmission (télécom...bit error rate artinya:rasio kesalahan bitbit error rate 뜻:비트 오류율