Title :
Simultaneous, Multichannel, Spatially Directive Data Transmission Using Direct Antenna Modulation
Author :
Hongzhe Shi ; Tennant, Alan
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Shefheld, Sheffield, UK
Abstract :
A multidirectional transmission scheme using direct antenna modulation (DAM) based on an array with 2-bit phase control is presented. By switching each element phase properly, the line-of-sight (LOS) communication channels generated by the scheme can be independent from each other at various directions. Compared to previous work, the use of 2-bit phase control offers prospects of lower system cost and simpler phase control. An algorithmic method for calculating the required phase control for simultaneous, independent multiuser data modulation is described, and specific examples are presented.
Keywords :
directive antennas; quadrature amplitude modulation; LOS communication channel; direct antenna modulation; element phase properly; independent multiuser data modulation; line of sight communication channel; multichannel directive data transmission; multidirectional transmission scheme; phase control; spatially directive data transmission; storage capacity 2 bit; Arrays; Constellation diagram; Phase control; Phase shifters; Receivers; Transmitters; Digital modulation; direct antenna modulation (DAM); multidirectional transmission; phased array;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2013.2287284
