Network Modulation: A New Dimension to Enhance Wireless Network Performance
Source: University of Victoria
The authors introduce an approach called network modulation which gives a new dimension to improve wireless network throughput and save energy. In current wireless systems, when a source transmits data to the receiver through a single-hop or multi-hop wireless path, the physical layer modulates and demodulates the information bits hop-by-hop, and the transmission over each hop is treated the same as in a point-to-point communication link. Given the broadcast nature of wireless medium and the wide variation of wireless channel quality, they let a sender transmit messages to multiple receivers simultaneously, using a software mapping technology, called network modulation, to redefine the constellation of typical Quadrature Amplitude Modulation (QAM) schemes.