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. © 2007 Elsevier GmbH. All rights reserved.
Original language | English |
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Pages (from-to) | 659-665 |
Number of pages | 7 |
Journal | AEU - International Journal of Electronics and Communications |
Volume | 62 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1 Oct 2008 |
Keywords
- Adaptive modulation and coding (AMC)
- Automatic repeat request (ARQ)
- Cross-layer design
- Multiple-input multiple-output (MIMO) channel
- Rate-compatible LDPC codes