Digital Communications: Fundamentals and Applications, 3rd Edition

Chapter 9

Modulation and Coding Trade-Offs

An image shows the block diagram for modulation and coding trade-offs. The block diagram includes optional blocks, essential blocks, and broadband wireless. The block diagram starts with the information source. The first block is the format block (essential). The message symbols, digital input m subscript i, and bitstream combine with the output of format and enter the source encode block (optional). The output of the source encode and the bitstream enters the encrypt block (optional). The channel symbols and the bitstream u subscript i enter the multiplex (optional) which has inputs from other sources. ...