Multicell resource allocation for multicarrier networks with multiuser decoding receivers

Download
2017
Yazarel, Yakup Kadri
In recent years, techniques for exploiting interference on the receiver side to improve the performance of future cellular networks have been of interest. These studies assume multiuser decoding capability of receivers, i.e. the receivers are able to decode the interference signal as well as the intended signal. Additionally, due to the dominance of data in network traffic, user rate demands are becoming crucial for resource allocation of cells in the network. In this thesis, we propose an efficient transmission scheme for the downlink of an OFDMA multicell multiuser system with multiuser decoding capable receivers. We define a marginal rate maximization problem taking into account minimum rate demands of users and develop practical scheduling (subchannel assignment) and power allocation algorithms using Lagrangian dual decomposition and gradient methods. Through Lagrangian dual decomposition, we derive the optimal power allocation rule using multiuser decoding modes for a given subchannel assignment. We observe that the method proposed here has low computational complexity and can be easily integrated to next generation networks as well as achieving high performance in practical scenarios.

Suggestions

Efficient scheduling and power allocation for multiuser decoding receivers in OFDMA networks with minimum rate requirements
Yazarel, Yakup K.; Yılmaz, Ali Özgür (2018-02-01)
In recent years, techniques for exploiting interference on the receiver side to improve the performance of future cellular networks have been of interest. Due to the dominance of data in network traffic, user rate demands are becoming crucial for resource allocation of cells in the network.
Generalized random spreading performance analysis of CDMA over GWSSUS fading channels
Ertuğ, Özgür; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2005)
Since direct-sequence code-division multiple-access (DS-CDMA) is an interference-limited random multiple-access scheme, the reduction of co-channel interference with either interference suppression or interference cancellation multiuser receivers and/or power control to prevent detrimental near-far situations is vital for improved performance. Up to date, some contributions investigated randomly-spread asymptotically - large number of users and large bandwidth - large CDMA systems with multiuser receivers a...
Interference alignment on multigroup multi way relay channels
Okutan, Mehmet Akif; Tuncer, Temel Engin; Department of Electrical and Electronics Engineering (2019)
Interference is a major problem for reliable multiuser communications. There are several ways to manage interference which are applied according to the power of interference compared to the power of desired signal. If interference is powerful than the desired signal then interference signal is decoded. Otherwise if it is much weaker than the desired signal it may be considered as noise. If signal powers of the desired signal and the interference are comparable then orthogonalizing all the signals from all t...
Interference suppression capability of faster than symbol rate sampling and frequency domain oversampling
Balevi, Eren; Yılmaz, Ali Özgür; Department of Electrical and Electronics Engineering (2016)
Detection of symbols in the presence of many interference sources is a difficult task in wireless channels. It is obligatory to reduce the interference for reliable communication. In this dissertation, minimum mean square error (MMSE) detection is investigated to suppress interference. Faster Than Symbol Rate (FTSR) sampling and Frequency Domain Oversampling (FDO) methods are proposed to enhance the interference suppression level of MMSE detection for both single user and multiuser communication. The aim of...
Automated Moving Object Classification in Wireless Multimedia Sensor Networks
Civelek, Muhsin; Yazıcı, Adnan (2017-02-15)
The use of wireless multimedia sensor networks (WMSNs) for surveillance applications has attracted the interest of many researchers. As with traditional sensor networks, it is easy to deploy and operate WMSNs. With inclusion of multimedia devices in wireless sensor networks, it is possible to provide data to users that is more meaningful than that provided by scalar sensor-based systems alone; however, producing, storing, processing, analyzing, and transmitting multimedia data in sensor networks requires co...
Citation Formats
Y. K. Yazarel, “Multicell resource allocation for multicarrier networks with multiuser decoding receivers,” Ph.D. - Doctoral Program, Middle East Technical University, 2017.