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DETECTION OF PILOT-HOPPING SEQUENCES FOR GRANT-FREE RANDOM ACCESS IN MASSIVE MIMO SYSTEMS
- Publication Year :
- 2019
-
Abstract
- In this paper, we study an active user detection problem for massive machine type communications (mMTC). The users transmit pilot-hopping sequences and detection of active users is performed based on the received energy. We utilize the channel hardening and favorable propagation properties of massive multiple- input multipleoutput (MIMO) to simplify the user detection. We propose and compare a number of different user detection methods and find that using non- negative least squares (NNLS) is well suited for the task at hand as it achieves good results as well as having the benefit of not having to specify further parameters.<br />Funding Agencies|ELLIIT; Swedish Research Council (VR)Swedish Research Council
Details
- Database :
- OAIster
- Notes :
- Becirovic, Ema, Björnson, Emil, Larsson, Erik G
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1261889002
- Document Type :
- Electronic Resource
- Full Text :
- https://doi.org/10.1109.ICASSP.2019.8682734