bit-error rates造句
例句與造句
- Cvsd （ continuous variable slope delta modulation ） voice coding enables operation at high bit - error rates
連續(xù)可變斜率增量調(diào)制的語音編碼可以在高誤碼率的情況下正常工作。 - Reducing the bit - error rate in digital communication with error - correction technology and improving the quality of communication have been widely defined and used as the standard technology all over the world
利用糾錯碼技術(shù)降低各類數(shù)字通信系統(tǒng)的誤碼率,提高通信質(zhì)量,已經(jīng)在世界上許多國家作為一門標(biāo)準(zhǔn)技術(shù)而廣泛采用。 - Future mobile communications have to support the transmission of high rate data and multimedia applications in the radio spectrum , which is already extremely scarce . the basic idea of adaptive coded modulation is to maintain a constant throughput by varying the transmitted power level , symbol transmission rate , constellation size , coding rate or any combination of these parameters . thus , without sacrificing bit - error rate ( ber ) , these schemes provide high average spectral efficiency by transmitting at high speeds under favorable channel conditions , and reducing throughput as the channel degrades
自適應(yīng)編碼調(diào)制( adaptivecodedmodulation , acm )的基本思想是在不犧牲系統(tǒng)傳輸性能(比如ber )為代價的前提下,通過單獨改變發(fā)送功率、波特率、編碼方案、碼率、調(diào)制方式,或者是綜合改變前面所述的各種參數(shù),在有利的信道條件下,獲得較大的吞吐量,當(dāng)信道質(zhì)量下將時,相應(yīng)地降低傳輸速率,最終達到提高平均頻譜效率的目的。 - In this paper , bit - error rate performance analyses are presented for coded and un - coded frequency hopping m - ary frequency - shift keyed systems under the condition of additive white gaussian noise ( awgn ) and partial band noise jamming and multitone jamming . the use of error - correct codes provide a way to improve the performance of frequency hopping system , particularly the use of reed - solomon code in a fh system under the condition of partial band noise jamming can greatly improve the performance of system . so we provide the way of coding and decoding of rs code in c language . in the end , we offer the simulation of the performance of time diversity fh / 2fsk system over partial band jamming noise channels
第一章為緒論，敘述跳頻通信的發(fā)展趨勢，以及基本概念，第二章及第三章介紹提高抗部分頻帶干擾的前向糾錯碼reed - solomon碼的原理和實現(xiàn)方法。第四章研究跳頻通信系統(tǒng)在各種干擾條件下的性能。最后在第五章以fh mfsk系統(tǒng)為例，探討在部分頻帶干擾下的系統(tǒng)性能，并進行計算機仿真，仿真結(jié)果表明采用分集技術(shù)和各種編碼技術(shù)對于系統(tǒng)的性能改善具有明顯的效果。 - It's difficult to find bit-error rates in a sentence. 用bit-error rates造句挺難的