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Downlink Intercell Coordination for Interference Management

Ramezani, Hamideh | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44630 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Golestani, Jamaloddin; Behroozi, Hamid
  7. Abstract:
  8. Intercellular coordination is a technique to mitigate intercell interference. In this technique, base stations of different cells coordinate with each other to send data for all users, so each user is serviced by several base stations. Nowadays, with the increasing use of wireless networks, the design of these networks is very important. Most problems in the design of wireless networks are due to limitations such as: interference, the lack of bandwidth and changes of channel. Using all channels in each cell is a suggested method to use the bandwidths efficiently; however it increases intercell interferences hence a method to control interference is needed. Coping with interference can be divided into two general groups: The first group of methods deal with it similar to noise and try to remove it. The second group has methods that try to use existing interference. The interference created for each user has useful information for other users, so methods of second group can increase user’s Shanon rate. Intercellular Coordination is also in this category. In this thesis a method to determine how to establish coordination between base stations in downlink is provided. At first, like other works in this field, we hypothesize that there is only one user in each cell and users have equal power. With these hypotheses we provide a method for intercellular coordination. Then, we propose an optimum power allocation for users to reach the maximum transmission rates of the user with minimum rate. At the end we propose a method to determine the inter-cell coordination for more than one user in each cell
  9. Keywords:
  10. Interference Management ; Intercell Interference Coordination ; Multiple Input Multiple Output (MIMO)System ; Clustering

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