Title :
A new bandwidth efficient transmit antenna modulation diversity scheme for linear digital modulation
Author :
Wittneben, Armin
Author_Institution :
ASCOM Tech Ltd., Maegenwil, Switzerland
Abstract :
A system is proposed and analyzed, which uses several transmit antennas to achieve diversity in a flat fading mobile radio environment. The signals at different antennas carry the same digital information, but have different modulation parameters (modulation diversity). In contrast to other proposals, no bandwidth expansion is required. Modulation diversity for quadrature amplitude modulation (QAM) type modulation is achieved by using different partial response type base pulses. Simulation results confirm the expected gain
Keywords :
antenna arrays; diversity reception; fading; land mobile radio; partial response channels; quadrature amplitude modulation; transmitting antennas; QAM; flat fading mobile radio environment; gain; linear digital modulation; partial response type base pulses; quadrature amplitude modulation; transmit antenna modulation diversity scheme; Amplitude modulation; Bandwidth; Digital modulation; Fading; Land mobile radio; Mobile antennas; Proposals; Pulse modulation; Quadrature amplitude modulation; Transmitting antennas;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397560