Enhancing Open Loop Beamsteering Performance for the Uplink of UMTS/HSPA+ under Discontinuous Transmission
Schröter S, Rieß S, Weigel R, Fischer G (2014)
Publication Type: Conference contribution
Publication year: 2014
Pages Range: 244-246
Event location: Newport Beach
Abstract
So called open loop transmit diversity algorithms for the uplink of UMTS use the power control commands as feedback to iteratively determine the antenna weights. The algorithms presented in literature so far are designed for continuous transmission. The UMTS standard, however, also allows discontinuous uplink transmission (DTX), which impairs the performance of these algorithms. This paper studies these impairments and proposes a method to design transmit diversity algorithms with improved performance in a DTX scenario. With such improved algorithms, the transmit power gain is 1.4 dB in DTX, which is an improvement of 0.7 dB over conventional non-DTX diversity algorithms.
Authors with CRIS profile
Simon Schröter
Lehrstuhl für Technische Elektronik
Steffen Rieß
Lehrstuhl für Technische Elektronik
Robert Weigel
Lehrstuhl für Technische Elektronik
Georg Fischer
Professur für Technische Elektronik
How to cite
APA:
Schröter, S., Rieß, S., Weigel, R., & Fischer, G. (2014). Enhancing Open Loop Beamsteering Performance for the Uplink of UMTS/HSPA+ under Discontinuous Transmission. In Proceedings of the IEEE Radio and Wireless Symposium (RWS) (pp. 244-246). Newport Beach, US.
MLA:
Schröter, Simon, et al. "Enhancing Open Loop Beamsteering Performance for the Uplink of UMTS/HSPA+ under Discontinuous Transmission." Proceedings of the IEEE Radio and Wireless Symposium (RWS), Newport Beach 2014. 244-246.
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