Practical TCP/IP and Ethernet Networking- P6 pps
... transmission channel can be determined from its bandwidth, by use of the following formula derived by Shannon. C = 2 B log 2 M bps Where B = bandwidth in hertz and M levels are used for each signaling ... special case where only two levels, ‘ON’ and ‘OFF’ are used (binary), M = 2 and C = 2 B. As an example, the maximum data transfer rate for a PSTN channel of bandwidth 3200 hertz...
Ngày tải lên: 04/07/2014, 08:21