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- Title
DESIGN AND MEASUREMENTS OF A MULTIPLE-OUTPUT TRANSMITTER FOR MIMO APPLICATIONS.
- Authors
VOTIS, CONSTANTINOS I.; KOSTARAKIS, PANOS; IVRISSIMTZIS, LEONIDAS P.
- Abstract
The design of a multiple-output transmitter for digital beamforming (DBF), Multiple-Input Multiple-Output (MIMO) and channel sounder applications, based on Direct Digital Synthesis (DDS) system is presented and investigated in terms of antenna array performance. DDS generates independently modulated signals on specific carrier frequencies and is employed as the first stage in the proposed implementation, furnishing output signal of configurable amplitude, phase and frequency. The resulting phase progression, amplitude and beamforming accuracy of a beam steering array are further investigated, showing that the proposed architecture can provide a steering beam with high accuracy. Experimental results of system performance indicate that this architecture can drive efficiently and accurately an antenna array with independent modulated RF signals, with programmable frequency, initial phase, and magnitude.
- Subjects
RADIO transmitter-receivers; MIMO systems; BEAMFORMING; ANTENNA arrays; PERFORMANCE evaluation; ELECTRONIC modulation; SIGNAL processing; PROGRAMMABLE array logic
- Publication
Journal of Circuits, Systems & Computers, 2011, Vol 20, Issue 3, p515
- ISSN
0218-1266
- Publication type
Article
- DOI
10.1142/S0218126611007426