Modern society is definitely more mobile than it was several decades ago. Accompanying the increased mobility is a corresponding craving for greater quantities of information. The increased demand has ...

Adaptive modulation techniques dynamically adjust the modulation order and coding rate of wireless transmissions to match varying channel conditions, thereby maximising spectral efficiency while ...

Fundamental to all wireless communications is modulation, the process of impressing the data to be transmitted on the radio carrier. Most wireless transmissions today are digital, and with the limited ...

Modulation is the process of varying a higher frequency carrier wave to transmit information. Though it is theoretically possible to transmit baseband signals (or information) without modulating it, ...

As an ultra-wideband microwave signal, amplitude shift keying (ASK) can be used in many occasions, such as electronic warfares, wireless communications and modern radar systems. Initially, ASK ...

Hierarchical modulation, also known as layered modulation, is a technique that embeds multiple data streams of differing priority within a single carrier waveform. By allocating distinct amplitude and ...