Abstract
In this paper, we consider a multi-cell multi-user MISO broadcast channel. The system operates according to the opportunistic beamforming framework in a multi-cell environment with variable number of transmit beams (may alternatively be referred as the transmission rank) at each base station. The maximum number of co-scheduled users in a cell is equal to its transmission rank, thus increasing it will have the effect of increasing the multiplexing gain. However, this will simultaneously increase the amount of interference in the network, which will decrease the rate of communication. This paper focuses on optimally setting the transmission rank at each base station such that a set of Quality of Service (QoS) constraints, that will ensure a guaranteed minimum rate per beam at each base station, is not violated. Expressions representing the achievable region of transmission ranks are obtained considering different network settings. The achievable transmission rank region consists of all achievable transmission rank tuples that satisfy the QoS constraints. Numerical results are also presented to provide further insights on the feasibility problem.
| Original language | English |
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| Title of host publication | IEEE ICC 2014 - Communications Theory |
| Editors | Abbas Jamalipour |
| Place of Publication | Piscataway NJ USA |
| Publisher | IEEE, Institute of Electrical and Electronics Engineers |
| Pages | 1904-1909 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781479920037 |
| ISBN (Print) | 9781479920051 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | IEEE International Conference on Communications 2014: Communications: Centrepoint of the Digital Economy - Sydney, Australia Duration: 10 Jun 2014 → 14 Jun 2014 http://icc2014.ieee-icc.org/ http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6878057 (IEEE Conference Proceedings) |
Conference
| Conference | IEEE International Conference on Communications 2014 |
|---|---|
| Abbreviated title | ICC 2014 |
| Country/Territory | Australia |
| City | Sydney |
| Period | 10/06/14 → 14/06/14 |
| Other | IEEE International Conference on Communications, ICC 2014, Sydney, Australia. The ICC is a flagship conference of the IEEE Communications Society and represents one of the largest gatherings of researchers and industry professionals in the field of communications in the world. This year’s conference is no exception and brings together more than 1500 delegates from around the globe to discuss the latest advances in this vibrant and constantly evolving field. |
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