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| Cross-layer Optimization for Multiuser Downlink Transmission Based on FDD-OFDMA Systems |
| Hu Ying①② Huang Yong-ming①③ Yang Lu-xi①③ |
①(School of Information Science and Engineering, Southeast University, Nanjing 210096, China)
②(Institute of Electronics and Information, Jiangsu University of Science and Technology, Zhenjiang 212003, China)
③(Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education, Southeast University, Nanjing 210096, China) |
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Abstract A resource scheduling cross-layer design scheme in FDD-OFDMA mobile communication downlink system about the issue of limited interference is proposed. A mathematical formulation of optimization issue is provided with the objective of maximizing system goodput under target Packet Error Rate (PER) constraint. The proposed method can use ACK/NAK feedback information to implement user selection and rate allocation without Channel State Information (CSI) at the base station. Simulation results demonstrate that the system goodput of proposed algorithms is close to the condition of with channel state information at the base station, it also has low complexity.
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Received: 14 April 2011
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Corresponding Authors:
Hu Ying
E-mail: zfhy116118@126.com
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2011, Vol. 33 
