Cross-layer Optimization for Multiuser Downlink Transmission Based on FDD-OFDMA Systems

Hu  Ying; Huang  Yong-Ming; Yang  Lu-Xi

doi:10.3724/SP.J.1146.2011.00347

Volume 33 Issue 12

Jan. 2012

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Hu Ying, Huang Yong-Ming, Yang Lu-Xi. Cross-layer Optimization for Multiuser Downlink Transmission Based on FDD-OFDMA Systems[J]. Journal of Electronics & Information Technology, 2011, 33(12): 2954-2959. doi: 10.3724/SP.J.1146.2011.00347

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Cross-layer Optimization for Multiuser Downlink Transmission Based on FDD-OFDMA Systems

doi: 10.3724/SP.J.1146.2011.00347

Received Date: 2011-04-14
Rev Recd Date: 2011-08-04
Publish Date: 2011-12-19

Abstract

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.
- Wireless communication,
- Frequency Division Duplex (FDD),
- OFDMA,
- Resource scheduling,
- Downlink system

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