TY - JOUR
T1 - Joint adaptive combining and multiuser downlink scheduling
AU - Park, Ki Hong
AU - Ko, Young Chai
AU - Alouini, Mohamed Slim
N1 - Funding Information:
Manuscript received May 29, 2007; revised November 26, 2007 and June 6, 2008. This work was supported by the Center for Broadband OFDM Mobile Access (BrOMA) at POSTECH through the ITRC program of the Korean MIC, supervised by IITA under Grant IITA-2005-C1090-0502-0008. This paper was presented in part at the IEEE Vehicular Technology Conference (VTC’07), Dublin, Ireland, April 2007. The review of this paper was coordinated by S. Cui.
PY - 2008
Y1 - 2008
N2 - In this paper, we propose two different types of downlink scheduling scheme based on assembling the schemes of 1) the switch-and-examine scheduling in the network layer and 2) the joint adaptive modulation and output-threshold maximum ratio combining (OT-MRC) in the physical layer and, thus, attempt to find an efficient cross-layer access scheme to exploit the user diversity as well as the high spectral efficiency and the antenna diversity gain. We consider a multiuser environment in which each base station (BS) equipped with a single antenna attempts to communicate with each user equipped with an L-finger RAKE receiver based on switch-and-examine transmission (SET) as a user selection-scheduling scheme. We propose two different SETs, i.e., spectrally efficient SET and feedback load-efficient SET. We analyze the performance of our proposed schemes and compare them with the optimal scheduling scheme in terms of average spectral efficiency and average number of estimated paths per user to quantify the complexity.
AB - In this paper, we propose two different types of downlink scheduling scheme based on assembling the schemes of 1) the switch-and-examine scheduling in the network layer and 2) the joint adaptive modulation and output-threshold maximum ratio combining (OT-MRC) in the physical layer and, thus, attempt to find an efficient cross-layer access scheme to exploit the user diversity as well as the high spectral efficiency and the antenna diversity gain. We consider a multiuser environment in which each base station (BS) equipped with a single antenna attempts to communicate with each user equipped with an L-finger RAKE receiver based on switch-and-examine transmission (SET) as a user selection-scheduling scheme. We propose two different SETs, i.e., spectrally efficient SET and feedback load-efficient SET. We analyze the performance of our proposed schemes and compare them with the optimal scheduling scheme in terms of average spectral efficiency and average number of estimated paths per user to quantify the complexity.
KW - Adaptive modulation
KW - Cross-layer optimization
KW - Diversity techniques
KW - Downlink scheduling scheme
UR - http://www.scopus.com/inward/record.url?scp=53149121321&partnerID=8YFLogxK
U2 - 10.1109/TVT.2008.917242
DO - 10.1109/TVT.2008.917242
M3 - Article
AN - SCOPUS:53149121321
SN - 0018-9545
VL - 57
SP - 2958
EP - 2968
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 5
ER -