Cross-layer design based on RC-LDPC codes in MIMO channels with estimation errors |
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| Authors: | Yuling Dongfeng Cheng-Xiang |
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| Affiliation: | aSchool of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, PR China;bSchool of Computer Science and Technology, Ludong University, Yantai, Shandong 264025, PR China;cState Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, PR China;dJoint Research Institute of Signal and Image Processing, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK |
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| Abstract: | In this paper, we propose a cross-layer design framework combining adaptive modulation and coding (AMC) with hybrid automatic repeat request (HARQ) based on rate-compatible low-density parity-check codes (RC-LDPC) in multiple-input multiple-output (MIMO) fading channels with estimation errors. First, we propose a new puncturing pattern for RC-LDPC codes and demonstrate that the new puncturing pattern performs similar to the random puncturing but is easier to apply. Then, we apply RC-LDPC codes with the new puncturing pattern to the cross-layer design combing AMC with ARQ over MIMO fading channels and derive the expressions for the throughput of the system. The effect of channel estimation errors on the system throughput is also investigated. Numerical results show that the joint design of AMC and ARQ based on RC-LDPC codes can achieve considerable spectral efficiency gain. |
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| Keywords: | Rate-compatible LDPC codes Adaptive modulation and coding (AMC) Automatic repeat request (ARQ) Cross-layer design Multiple-input multiple-output (MIMO) channel |
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