Implementing the Viterbi Algorithm in Today
Implementing the Viterbi Algorithm in Today
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发表时间：
2009
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通讯作者：
Shai Shpigelblat
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作者：
Shai Shpigelblat
随着消费者对增加的内容的需求以及因此增加的高数据带宽继续驱动通信系统，用于差错控制的编码已经变得非常重要。在保持高数据可靠性的同时提高误码率（BER）的一种方法是使用像维特比算法的纠错技术。维特比算法最初由Andrew Viterbi设想为噪声数字通信的纠错方案，它提供了一种有效的前向纠错（FEC）方法，可提高信道可靠性。今天，它被用于许多数字通信系统中，应用范围广泛，如LTE物理下行链路控制信道（PDCCH）、CDMA和GSM数字蜂窝、拨号调制解调器、卫星、深空通信和802.11无线局域网。它也常用于语音识别，关键字定位和计算语言学。
With the consumer demand for increased content and as a result, increasing high data bandwidth continuing to drive communications systems, coding for error control has become extraordinarily important. One way to improve the Bit Error Rate (BER), while maintaining high data reliability, is to use an error correction technique like the Viterbi algorithm. Originally conceived by Andrew Viterbi as an error-correction scheme for noisy digital communication, the Viterbi algorithm provides an efficient method for Forward Error Correction (FEC) that improves channel reliability. Today, it is used in many digital communications systems in applications as diverse as LTE Physical Downlink Control Channel (PDCCH), CDMA and GSM digital cellular, dial-up modems, satellite, deep-space communications, and 802.11 wireless LANs. It is also commonly used in speech recognition, keyword spotting and computational linguistics.