SIAM Journal on Applied Mathematics, Vol. 58, No. 6 (Dec., 1998), pp. 1901-1930 (30 pages) We study a class of partial differential equations in one spatial dimension, which can be seen as model ...

Varying the voltage of a carrier or a direct current in order to transmit analog or digital data. Amplitude modulation (AM) is the oldest method of transmitting human voice electronically. In an ...