Note A burst error means that 2 or more bits in the data unit have changed. 一个突发差错意味着数据单元中两位或多位 发生变化。 10.6
10.6 A burst error means that 2 or more bits in the data unit have changed. 一个突发差错意味着数据单元中两位或多位 发生变化。 Note
Figure 10.2 Burst error of length 8 Length of burst error(8 bits) Sent 0100010001000011 Corrupted bits 0101110101100011 Received 10.7
10.7 Figure 10.2 Burst error of length 8
Note To detect or correct errors,we need to send extra(redundant)bits with data. 为了检测或纠正错误，我们需要发送除了数 据外的额外（冗余）位。 10.8
10.8 To detect or correct errors, we need to send extra (redundant) bits with data. 为了检测或纠正错误，我们需要发送除了数 据外的额外（冗余）位。 Note
Figure 10.3 The structure ofencoder and decoder编码器和译码器的结构 Sender Receiver Encoder Decoder Message Message Correct or discard Generator Checker Unreliable transmission Message and redundancy Received information 10.9
10.9 Figure 10.3 The structure of encoder and decoder 编码器和译码器的结构
Note In this book,we concentrate on block codes;we leave convolution codes to advanced texts. 本课程，我们主要介绍块编码。 10.10
10.10 In this book, we concentrate on block codes; we leave convolution codes to advanced texts. 本课程，我们主要介绍块编码。 Note