Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5148
Title: Reduced feedback load using user selection algorithms for the multiuser multi-input single-output systems
Authors: Khanfir, Hajer
Le Ruyet, Didier
Özbek, Berna
Keywords: Adaptive scheduling
Channel directions
Noisy feedback
Quantized channels
Feedback algorithms
Publisher: John Wiley and Sons Inc.
Source: Khanfir, H., Le Ruyet, D., and Özbek, B. (2013). Reduced feedback load using user selection algorithms for the multiuser multi-input single-output systems. Transactions on emerging telecommunications technologies, 24(7-8), 809-819. doi:10.1002/ett.2557
Abstract: Locate full-text(opens in a new window)|Full Text(opens in a new window)|View at Publisher| Export | Download | Add to List | More... Transactions on emerging telecommunications technologies Volume 24, Issue 7-8, November-December 2013, Pages 809-819 Reduced feedback load using user selection algorithms for the multiuser multi-input single-output systems (Article) Khanfir, H.a , Le Ruyet, D.a, Özbek, B.b a Electronics and Communications Laboratory, CNAM, 292 Rue Saint Martin, 75141, Paris, France b Electrical and Electronics Engineering Department, Izmir Institute of Technology, Urla, 35430, Izmir, Turkey View references (27) Abstract For wireless multiuser multi-input single-output communication systems with adaptive scheduling and precoding, the users have to feed back their channel state information. However, the amount of feedback data increases with the number of users and the number of transmit antennas. In this paper, we propose a criterion based on the orthogonality between the users' channels to reduce this uplink load. Without cooperation between the users, we only allow users that are semi-orthogonal to feed back their quantized channel information to the base station. We propose a lower bound on the sum rate for the proposed criterion. We show that the performance is almost independent of the number of quantized channel quality information and only channel direction information is important at the transmitter. Then, we consider a noisy feedback channel and propose an algorithm to reduce the noise effect on the analogue feedback
URI: https://doi.org/10.1002/ett.2557
http://hdl.handle.net/11147/5148
ISSN: 2161-3915
2161-3915
2161-5748
Appears in Collections:Electrical - Electronic Engineering / Elektrik - Elektronik Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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