Abstract
In this letter, we investigate the diversity performance of coded beamforming schemes in AF multiple antenna relay systems for frequency selective channels. To extract available multipath diversity, we utilize orthogonal frequency division multiplexing combined with bit-interleaved coded modulation. The pairwise error probability is analyzed based on the correlated fading assumption, and the theoretical evaluation of the maximum achievable diversity order is presented. From the analysis, a proper code construction criterion is provided which achieves the full diversity with the minimum code memory. Our analysis also demonstrates that the subcarrier mapping (or pairing) operations at the relay have no impact on the diversity order. Simulations confirm that our analysis is accurate and matches well with the simulation results.
| Original language | English |
|---|---|
| Article number | 5934347 |
| Pages (from-to) | 2445-2450 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 10 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2011 Aug |
Bibliographical note
Funding Information:Manuscript received December 15, 2010; revised March 29, 2011; accepted May 19, 2011. The associate editor coordinating the review of this paper and approving it for publication was H. Shin. The authors are with the School of Electrical Eng., Korea University, Seoul, Korea (e-mail: {generalsci, inkyu}@korea.ac.kr). This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2010-0017909), and in part by a Korea University Grant. This paper was presented in part at the IEEE 44th Asilomar Conference, Pacific Grove, USA, November 2010. Digital Object Identifier 10.1109/TWC.2011.061511.102217
Keywords
- MIMO
- diversity
- relay
- subcarrier pairing
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics