Name
Title | ||
|---|---|---|
Field trial results on multi-user MIMO downlink OFDMA in typical outdoor scenario using proportional fair scheduling |
Abstract | ||
|---|---|---|
In this paper we present rest real-time outdoor multi-user multi-antenna measurements based on system parameters close to 3GPP-long term evolution. We demonstrate switching between various transmission modes in the downlink steered by a quantized feedback channel. Real time results show that an OFDMA proportional fair scheduler based on the quantized feedback achieves significant performance gains over axed OFDM-TDMA system. However, the proportional fair scheduler results in user starvation periods in the event of correlated feedbacks. To this end, we formulate a downlink scheduling problem with zero-starvation as a short term fairness in Kulkami, S.S., et al (2003) objective. This is an integer programming (IP) problem. In this paper, we present a simple heuristic algorithm for this problem for K = 2 users. Significant system sum rate gains are shown while still fulfilling the fairness objective. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/WSA.2008.4475537 | WSA |
Keywords | Field | DocType |
mimo communication,ofdm modulation,channel allocation,heuristic programming,3gpp-long term evolution,ofdma,correlated feedbacks,downlink scheduling,heuristic algorithm,integer programming,multiuser mimo downlink,outdoor multiuser multiantenna measurements,proportional fair scheduling,quantized feedback channel,transmission modes,user starvation periods,real time,antenna measurement,scheduling problem | Multi-user MIMO,Heuristic (computer science),Scheduling (computing),Real-time computing,Integer programming,Engineering,Channel allocation schemes,Orthogonal frequency-division multiplexing,Proportionally fair,Telecommunications link | Conference |
ISBN | Citations | PageRank |
978-1-4244-1757-5 | 1 | 0.48 |
References | Authors | |
1 | 8 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Venkatkumar Venkatasubramanian | 1 | 107 | 14.88 |
| Thomas Haustein | 2 | 281 | 27.60 |
| henry m wu | 3 | 1 | 0.48 |
| egon schulz | 4 | 1 | 0.48 |
| Thomas Wirth | 5 | 173 | 17.46 |
| andreas forck | 6 | 3 | 0.91 |
| Sander Wahls | 7 | 58 | 17.32 |
| Volker Jungnickel | 8 | 653 | 84.68 |