Abstract
In this paper, we first introduce a simple two-cell multiple-input multiple-output (MIMO) solution where each base station has only its own data message. The algorithm is based on limited feedback from the mobile station (MS). We assume there is no base station (BS) cooperation through backbone; therefore cooperation among BSs is not a requirement. This renders the concept of the proposed solution easier for product implementation. To extend the algorithm to a multi-cell scenario, we next propose a novel physical beam-switching method based on the proposed two-cell MIMO solution. Conventionally, all BSs align the beam directions to avoid inter-cell interference. In this paper, however, we propose using a different beam-switching method based on beam conflict. Instead of aligning all the beams, we intentionally create a strong interference term. In doing so, all but the strongest interference is significantly reduced; the strongest interference term is further removed/minimized by the proposed two-cell MIMO solution. This results in increasing the received signal-to-noise-plus-interference ratio (SINR). Unlike prior work, our solution creates and utilizes the conflict, that is, the conflict is useful. That the conflict significantly helps multi-cell systems improve throughput is confirmed through numerical results.
| Original language | English |
|---|---|
| Title of host publication | Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 |
| Pages | 923-927 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2010 Dec 1 |
| Event | 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 - Pacific Grove, CA, United States Duration: 2010 Nov 7 → 2010 Nov 10 |
Publication series
| Name | Conference Record - Asilomar Conference on Signals, Systems and Computers |
|---|---|
| ISSN (Print) | 1058-6393 |
Other
| Other | 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 |
|---|---|
| Country | United States |
| City | Pacific Grove, CA |
| Period | 10/11/7 → 10/11/10 |
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All Science Journal Classification (ASJC) codes
- Signal Processing
- Computer Networks and Communications
Cite this
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Is conflict always bad? From an interference management perspective. / Chae, Chan-Byoung; Yang, Kai; Yiu, Simon; Calin, Doru.
Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010. 2010. p. 923-927 5757702 (Conference Record - Asilomar Conference on Signals, Systems and Computers).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Is conflict always bad? From an interference management perspective
AU - Chae, Chan-Byoung
AU - Yang, Kai
AU - Yiu, Simon
AU - Calin, Doru
PY - 2010/12/1
Y1 - 2010/12/1
N2 - In this paper, we first introduce a simple two-cell multiple-input multiple-output (MIMO) solution where each base station has only its own data message. The algorithm is based on limited feedback from the mobile station (MS). We assume there is no base station (BS) cooperation through backbone; therefore cooperation among BSs is not a requirement. This renders the concept of the proposed solution easier for product implementation. To extend the algorithm to a multi-cell scenario, we next propose a novel physical beam-switching method based on the proposed two-cell MIMO solution. Conventionally, all BSs align the beam directions to avoid inter-cell interference. In this paper, however, we propose using a different beam-switching method based on beam conflict. Instead of aligning all the beams, we intentionally create a strong interference term. In doing so, all but the strongest interference is significantly reduced; the strongest interference term is further removed/minimized by the proposed two-cell MIMO solution. This results in increasing the received signal-to-noise-plus-interference ratio (SINR). Unlike prior work, our solution creates and utilizes the conflict, that is, the conflict is useful. That the conflict significantly helps multi-cell systems improve throughput is confirmed through numerical results.
AB - In this paper, we first introduce a simple two-cell multiple-input multiple-output (MIMO) solution where each base station has only its own data message. The algorithm is based on limited feedback from the mobile station (MS). We assume there is no base station (BS) cooperation through backbone; therefore cooperation among BSs is not a requirement. This renders the concept of the proposed solution easier for product implementation. To extend the algorithm to a multi-cell scenario, we next propose a novel physical beam-switching method based on the proposed two-cell MIMO solution. Conventionally, all BSs align the beam directions to avoid inter-cell interference. In this paper, however, we propose using a different beam-switching method based on beam conflict. Instead of aligning all the beams, we intentionally create a strong interference term. In doing so, all but the strongest interference is significantly reduced; the strongest interference term is further removed/minimized by the proposed two-cell MIMO solution. This results in increasing the received signal-to-noise-plus-interference ratio (SINR). Unlike prior work, our solution creates and utilizes the conflict, that is, the conflict is useful. That the conflict significantly helps multi-cell systems improve throughput is confirmed through numerical results.
UR - http://www.scopus.com/inward/record.url?scp=79957991468&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79957991468&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2010.5757702
DO - 10.1109/ACSSC.2010.5757702
M3 - Conference contribution
SN - 9781424497218
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 923
EP - 927
BT - Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
ER -