商品簡介
High-speed digital communications build on the principles of Bell's 1876 invention. The vice president of engineering for a satellite communications company lucidly explains telephony fundamentals before turning to the specifics of broadband communications and home/small office networking: high-speed modems; digital modulation techniques; orthogonal signals; power line, telephone line, radio frequency, and satellite communications; and the "last mile" connection from competitive local distributors of the signal to the end user. Includes some consideration of standards and costs, and supporting diagrams and equations. Annotation c. Book News, Inc., Portland, OR (booknews.com)
