Achievable rates in the SIMO-uplink/MISOdownlink of an FDD system with imperfect CSI

Authors:
Mario Castañeda;Anup Chathoth;Josef A. Nossek
Affiliations:
Lehrstuhl für Netzwerktheorie und Signalverarbeitung, Technische Universität München, München, Germany;Lehrstuhl für Netzwerktheorie und Signalverarbeitung, Technische Universität München, München, Germany;Lehrstuhl für Netzwerktheorie und Signalverarbeitung, Technische Universität München, München, Germany
Venue:
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
Year:
2009

Citing 3
Cited 0

Wireless Communications

Wireless Communications
On the performance of random vector quantization limited feedback beamforming in a MISO system

IEEE Transactions on Wireless Communications
How much training is needed in multiple-antenna wireless links?

IEEE Transactions on Information Theory

Quantified Score

Hi-index	0.00

Visualization

Abstract

In practical systems, the available CSI for coherent transmission can not always be assumed to be perfect. For instance, in the MISO-downlink of a single-user FDD system with multiple antennas at the BS and a single antenna at the user, the available transmit CSI is actually estimated, quantized, outdated and affected by feedback errors. On the other hand, in the reverse link of this FDD system, i.e. the SIMO-uplink, the available receive CSI is only estimated. The two links of this FDD system represent a two-way system, in which we encounter a tradeoff between the MISO-downlink and SIMO-uplink rate due to the feedback of the transmit CSI in the uplink. Taking into account this tradeoff, we analyze the achievable rates in both links of the described FDD system considering imperfect CSI and limited feedback.