In this study, the authors propose a new cooperative multiplexing scheme for downlink transmission using dynamic spectrum access (DSA) principles. In this scheme, the base-station (BS) transmits to its distant user using a selected relay node in two hops. In the second hop, while the relay forwards information to the distant user, the BS transmits information to another selected user in its vicinity using DSA principles. Assuming peak power and peak interference constraints, the authors derive outage and ergodic rate performance of the user served by DSA assuming various user selection schemes. The authors consider gain-based selection, SINR based selection (SS), interference cancellation (IC), as well as a hybrid scheme that employs both SS and IC. The authors demonstrate that apportioning of time between the first and second hop of relaying can improve outage performance of the user served by DSA while ensuring certain guaranteed performance for the distant user. The presented analytical expressions are compared with computer simulation results.

References

1. 1)
  - J.N. Laneman , G.W. Wornell . Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks. IEEE Trans. Inf. Theory , 10 , 2415 - 2425
2. 2)
  - R.M. Radaydeh . SNR and SINR selection combining algorithms in the presence of arbitrarily distributed co-channel interferers. IET Commun. , 1 , 57 - 66
3. 3)
  - 14. Sung, C.K., Collings, I.: ‘Multiuser cooperative multiplexing with interference suppression in wireless relay networks’, IEEE Trans. Wirel. Commun., 2010, 9, (8), pp. 2528–2538 (doi: 10.1109/TWC.2010.061510.090573).
4. 4)
  - 7. Han, Y., Ting, S.H., Pandharipande, A.: ‘Cooperative spectrum sharing protocol with selective relaying system’, IEEE Trans. Commun., 2012, 60, (1), pp. 62–67 (doi: 10.1109/TCOMM.2011.100411.100469).
5. 5)
  - 17. Gradshteyn, I.S., Ryzhik, I.M.: ‘Table of integrals, series, and products’ (Academic Press, New York, 2007, 7th edn.).
6. 6)
  - D. Cabric , I. O'Donnel , M.S.W. Chen , R.W. Brodersen . Spectrum sharing radios. IEEE Circuits Syst. Mag. , 2 , 30 - 45
7. 7)
  - 10. Guimaraes, F., da Costa, D., Tsiftsis, T., Cavalcante, C., Karagiannidis, G.: ‘Multiuser and multirelay cognitive radio networks under spectrum-sharing constraints’, IEEE Trans. Veh. Tech., 2014, 63, (1), pp. 433–439 (doi: 10.1109/TVT.2013.2275201).
8. 8)
  - 5. Han, Y., Ting, S.H., Pandharipande, A.: ‘Cooperative spectrum sharing protocol with secondary user selection’, IEEE Trans. Wirel. Commun., 2010, 9, (9), pp. 2914–2923 (doi: 10.1109/TWC.2010.080210.091741).
9. 9)
  - Q. Zhao , B.M. Sadler . A survey of dynamic spectrum access. IEEE Signal Process. Mag. , 3 , 79 - 89
10. 10)
  - 10. Xu, W., Zhang, J., Zhang, P., Tellambura, C.: ‘Outage probability of decode-and-forward cognitive relay in presence of primary user's interference’, IEEE Commun. Lett., 2012, 16, (8), pp. 1252–1255 (doi: 10.1109/LCOMM.2012.061912.120770).
11. 11)
  - 19. Abramowitz, M., Stegun, I.A.: ‘Handbook of mathematical functions with formulas, graphs, and mathematical tables’ (Dover, New York, 1964).
12. 12)
  - A. Bletsas , A. Khisti , D.P. Reed , A. Lippman . A simple cooperative diversity method based on network path selection. IEEE J. Sel. Areas Commun. , 3 , 659 - 672
13. 13)
  - 4. Song, M., Xin, C., Zhao, Y., Cheng, X.: ‘Dynamic spectrum access: from cognitive radio to network radio’, IEEE Wirel. Commun., 2012, 19, (1), pp. 23–29 (doi: 10.1109/MWC.2012.6155873).
14. 14)
  - A. Sendonaris , E. Erkip , B. Aazhang . User cooperation diversity. Two Parts. IEEE Trans. Commun. , 1927 - 1948
15. 15)
  - 9. Tourki, K., Qaraqe, K., Alouini, M.S.: ‘Outage analysis for underlay cognitive networks using incremental regenerative relaying’, IEEE Trans. Veh. Tech., 2013, 62, (2), pp. 721–734 (doi: 10.1109/TVT.2012.2222947).
16. 16)
  - C. Zhong , T. Ratnarajah , K.-K. Wong . Outage analysis of decode-and-forward cognitive dual-hop systems with the interference constraint in nakagami-m fading channels. IEEE Trans. Veh. Technol. , 6 , 2875 - 2879
17. 17)
  - S. Haykin . Cognitive radio: brain-empowered wireless communications. IEEE J. Sel. Areas Commun. , 2 , 201 - 220
18. 18)
  - D.B. da Costa , S. Aissa . Capacity analysis of cooperative systems with relay selection in nakagami-m fading. IEEE Commun. Lett. , 637 - 639
19. 19)
  - 18. David, H.A., Nagaraja, H.N.: ‘Order statistics’ (John Wiley & Sons, 2003, 3rd edn.).

Performance of a cooperative downlink multiplexing scheme using dynamic spectrum access principles

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