TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Saad, Ahmad
A1  - Schepker, Henning F.
A1  - Staehle, Barbara
A1  - Knorr, Rudi
T1  - Whitespace prediction using hidden markov model based maximum likelihood classification
T2  - 89th Vehicular Technology Conference (VTC2019-Spring), 28 April-1 May 2019, Kuala Lumpur, Malaysia
N2  - The cornerstone of cognitive systems is environment awareness which enables agile and adaptive use of channel resources. Whitespace prediction based on learning the statistics of the wireless traffic has proven to be a powerful tool to achieve such awareness. In this paper, we propose a novel Hidden Markov Model (HMM) based spectrum learning and prediction approach which accurately estimates the exact length of the whitespace in WiFi channels within the shared industrial scientific medical ISM) bands. We show that extending the number of hidden states and formulating the prediction problem as a maximum likelihood (ML) classification leads to a substantial increase in the prediction horizon compared to classical approaches that predict the immediate (short-term) future. We verify the proposed algorithm through simulations which utilize a model for WiFi traffic based on extensive measurement campaigns.
Y1  - 2019
UR  - https://ieeexplore.ieee.org/document/8746327
SN  - 978-1-7281-1217-6
SB  - 978-1-7281-1217-6
U6  - https://doi.org/10.1109/VTCSpring.2019.8746327
DO  - https://doi.org/10.1109/VTCSpring.2019.8746327
N1  - Volltextzugriff für Angehörige der Hochschule Konstanz möglich
SP  - 7
S1  - 7
PB  - IEEE
ER  -