Abstract
Opportunistic beamforming was recently proposed to exploit multiuser diversity in cellular wireless communication systems. The basic idea is to use multiple 'dumb' transmit antennas at the base station to deliberately induce channel fluctuations that mimic those due to multi-path and Doppler. These fluctuations can be exploited by a smart scheduler to improve system throughput. Practical considerations can limit the rate of the induced channel fluctuations, therefore resulting in performance penalty for delay sensitive traffic such as voice. In this paper, we propose an enhancement of this technique that uses opportunistic beamforming on multiple 'pipes' to overcome this shortcoming and yield additional performance improvement by combining selection diversity and multiuser diversity. The simplicity of this technique and the resulting performance benefits point to the potential value in thinking of cellular wireless systems from an asynchronous packet-data perspective rather than adopting the conventional circuit approach.
| Original language | English (US) |
|---|---|
| Title of host publication | IEEE Vehicular Technology Conference |
| Pages | 1762-1766 |
| Number of pages | 5 |
| Volume | 58 |
| Edition | 3 |
| State | Published - 2003 |
| Event | 2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States Duration: Oct 6 2003 → Oct 9 2003 |
Other
| Other | 2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall |
|---|---|
| Country | United States |
| City | Orlando, FL |
| Period | 10/6/03 → 10/9/03 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Enhanced opportunistic beamforming. / Laroia, Rajiv; Li, Junyi; Rangan, Sundeep; Srinivasan, Murari.
IEEE Vehicular Technology Conference. Vol. 58 3. ed. 2003. p. 1762-1766.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Enhanced opportunistic beamforming
AU - Laroia, Rajiv
AU - Li, Junyi
AU - Rangan, Sundeep
AU - Srinivasan, Murari
PY - 2003
Y1 - 2003
N2 - Opportunistic beamforming was recently proposed to exploit multiuser diversity in cellular wireless communication systems. The basic idea is to use multiple 'dumb' transmit antennas at the base station to deliberately induce channel fluctuations that mimic those due to multi-path and Doppler. These fluctuations can be exploited by a smart scheduler to improve system throughput. Practical considerations can limit the rate of the induced channel fluctuations, therefore resulting in performance penalty for delay sensitive traffic such as voice. In this paper, we propose an enhancement of this technique that uses opportunistic beamforming on multiple 'pipes' to overcome this shortcoming and yield additional performance improvement by combining selection diversity and multiuser diversity. The simplicity of this technique and the resulting performance benefits point to the potential value in thinking of cellular wireless systems from an asynchronous packet-data perspective rather than adopting the conventional circuit approach.
AB - Opportunistic beamforming was recently proposed to exploit multiuser diversity in cellular wireless communication systems. The basic idea is to use multiple 'dumb' transmit antennas at the base station to deliberately induce channel fluctuations that mimic those due to multi-path and Doppler. These fluctuations can be exploited by a smart scheduler to improve system throughput. Practical considerations can limit the rate of the induced channel fluctuations, therefore resulting in performance penalty for delay sensitive traffic such as voice. In this paper, we propose an enhancement of this technique that uses opportunistic beamforming on multiple 'pipes' to overcome this shortcoming and yield additional performance improvement by combining selection diversity and multiuser diversity. The simplicity of this technique and the resulting performance benefits point to the potential value in thinking of cellular wireless systems from an asynchronous packet-data perspective rather than adopting the conventional circuit approach.
UR - http://www.scopus.com/inward/record.url?scp=4143119952&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4143119952&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:4143119952
VL - 58
SP - 1762
EP - 1766
BT - IEEE Vehicular Technology Conference
ER -