10-1 INTRODUCTION Let us first discuss some issues related,directly or indirectly,to error detection and correction. 首先直接或间接地讨论有关差错检测和差错纠正的间题 Topics discussed in this section: Types of Errors 差错类型 Redundancy 冗余 Detection Versus Correction检错和纠错 Forward Error Correction Versus Retransmission前向纠错和重传 Coding 编码 Modular Arithmetic 模运算 10.3 10.3 10-1 INTRODUCTION Let us first discuss some issues related, directly or indirectly, to error detection and correction. 首先直接或间接地讨论有关差错检测和差错纠正的问题 Types of Errors 差错类型 Redundancy 冗余 Detection Versus Correction 检错和纠错 Forward Error Correction Versus Retransmission 前向纠错和重传 Coding 编码 Modular Arithmetic 模运算 Topics discussed in this section: