Selection of the Best Two-Hop AF Wireless Link under Multiple Antenna Schemes over a Fading Channel
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In evaluating the performance of a dual-hop wireless link, the effects of large and small scale fading has to beconsidered. To overcome this fading effect, several schemes, such as multiple-input multiple-output (MIMO)with orthogonal space time block codes (OSTBC), different combining schemes at the relay and receivingend, and orthogonal frequency division multiplexing (OFDM) are used in both the transmitting and the relaylinks. In this paper, we first make compare the performance of a two-hop wireless link under a differentcombination of space diversity in the first and second hop of the amplify-and-forward (AF) case. Our secondtask in this paper is to incorporate the weak signal of a direct link and then by applying the channel model oftwo random variables (one for a direct link and another for a relayed link) we get very impressive result at alow signal-to-noise ratio (SNR) that is comparable with other models at a higher SNR. Our third task is tobring other three schemes under a two-hop wireless link: use of transmit antenna selection (TAS) on both linkwith weak direct link, distributed Alamouti scheme in two-hop link and single relay antenna with OFDM subcarrier. Finally, all of the schemes mentioned above are compared to select the best possible model. The mainfinding of the paper is as follows: the use of MIMO on both hops but application TAS on both links with weakdirect link and the full rate OFDM with the sub-carrier for an individual link provide a better result ascompared to other models.
Abstract
In evaluating the performance of a dual-hop wireless link, the effects of large and small scale fading has to beconsidered. To overcome this fading effect, several schemes, such as multiple-input multiple-output (MIMO)with orthogonal space time block codes (OSTBC), different combining schemes at the relay and receivingend, and orthogonal frequency division multiplexing (OFDM) are used in both the transmitting and the relaylinks. In this paper, we first make compare the performance of a two-hop wireless link under a differentcombination of space diversity in the first and second hop of the amplify-and-forward (AF) case. Our secondtask in this paper is to incorporate the weak signal of a direct link and then by applying the channel model oftwo random variables (one for a direct link and another for a relayed link) we get very impressive result at alow signal-to-noise ratio (SNR) that is comparable with other models at a higher SNR. Our third task is tobring other three schemes under a two-hop wireless link: use of transmit antenna selection (TAS) on both linkwith weak direct link, distributed Alamouti scheme in two-hop link and single relay antenna with OFDM subcarrier. Finally, all of the schemes mentioned above are compared to select the best possible model. The mainfinding of the paper is as follows: the use of MIMO on both hops but application TAS on both links with weakdirect link and the full rate OFDM with the sub-carrier for an individual link provide a better result ascompared to other models.
참고문헌 (28)
- A. Zafar, "Energy-efficient power allocation for fixed-gain amplifyand-forward relay networks with partial channel state information", IEEE Wireless Communications Letters, 1(6), pp.553~556 (2012)
- S. Huang, "Optimal power allocation for spectrum sensing and data transmission in cognitive relay networks", IEEE Wireless Communications Letters, 1(1), pp.26~29 (2012)
- H. Yu, "Outage probability and SER of amplify-and-forward cognitive relay networks", IEEE Wireless Communications Letters, 2(2), pp.219~222 (2013)
- N. Cao, "Estimation of the average fading powers for AF relay system", IEEE Communications Letters, 17(1), pp.135~138 (2013)
- H. Y. Lateef, "On the performance analysis of multi-hop cooperative relay networks over generalized-K fading channels", IEEE Communications Letters, 15(9), pp.968~970 (2011)
- P. M. Shankar, "Error rates in generalized shadowed fading channels", Wireless Personal Communications, 28(3), pp.233~238 (2004)
- N. S. Ferdinand, "Effects of line-of-sight interference on the performance of amplify-and-forward relay network", IEEE Communications Letters, 17(5), pp.940~943 (2013)
- D. Gunduz, "The multiway relay channel", IEEE Transactions on Information Theory, 59(1), pp.51~63 (2013)
- Z. Yan, "Exact outage performance of cognitive relay networks with maximum transmit power limits", IEEE Communications Letters, 15(12), pp.1317~1319 (2011)
- Z. Dai, "An adaptive cooperation communication strategy for enhanced opportunistic spectrum access in cognitive radios", IEEE Communications Letters, 16(1), pp.40~43 (2012)
- Y. Liu, "Adaptive resource allocation for improved DF aided downlink multi-user OFDM systems", IEEE Wireless Communications Letters, 1(6), pp.557~560 (2012)
- Z. Chen, "Analysis of transmit antenna selection", maximal-ratio combining in Rayleigh fading channels, 2005, pp.54(4), 1312~1321
- N. Yang, "Transmit antenna selection for security enhancement in MIMO wiretap channels", IEEE Transactions on Communications, 61(1), pp.144~154 (2013)
- B. S. Tan, "Performance analysis of orthogonal space-time block code with minimumselection generalized selection combining receiver over Rayleigh fading", IEEE Transactions on Vehicular Technology, 61(3), pp.1463~1467 (2012)
- V. Tarokh, "Space-time block codes from orthogonal designs", IEEE Transactions on Information Theory, 45(5), pp.1456~1467 (1999)
- S. S. Ikki, "Impact of imperfect channel estimation and co-channel interference on dual-hop relaying systems", IEEE Communications Letters, 16(3), pp.324~327 (2012)
- A. Nadia, "Performance evaluation of two-hop wireless link under Nakagami-m fading", International Journal of Advanced Computer Science and Applications, 4(7), pp.142~146 (2013)
- M. Elkashlan, "A comparison of two MIMO relaying protocols in Nakagami-m fading", IEEE Transactions on Vehicular Technology, 61(3), pp.1416~1422 (2012)
- T. A. Tsiftsis, "Nonregenerative dual-hop cooperative links with selection diversity", EURASIP Journal on Wireless Communications and Networking, 2006(2), pp.34~34 (2006)
- M. Matthaiou, "Low-SNR analysis of MIMO Weibull fading channels", IEEE Communications Letters, 16(5), pp.694~697 (2012)
- S. Verdu, "Spectral efficiency in the wideband regime", IEEE Transactions on Information Theory, 48(6), pp.1319~1343 (2002)
- G. Amarasuriya, "Performance analysis framework for transmit antenna selection strategies of cooperative MIMO AF relay networks", IEEE Transactions on Vehicular Technology, 60(7), pp.3030~3044 (2011)
- A. Y. Panah, "Single-user and multicast OFDM power loading with nonregenerative relaying", IEEE Transactions on Vehicular Technology, 58(9), pp.4890~4902 (2009)
- T. Q. Duong, "On the symbol error probability of distributed-Alamouti scheme", Journal of Communications, 4(7), pp.437~444 (2009)
- Y. Liu, "Adaptive resource allocation for improved DF aided downlink multi-user OFDM systems", IEEE Wireless Communications Letters, 1(6), pp.557~560 (2012)
- A. Tall, "MIMO channel capacity with full CSI at low SNR", IEEE Wireless Communications Letters, 1(5), pp.488~491 (2012)
- O. Souihli, "Benefits of rich scattering in MIMO channels : a graph-theoretical perspective", IEEE Communications Letters, 17(1), pp.23~26 (2013)
- C. Zhong, "Outage analysis of decode-and-forward cognitive dual-hop systems with the interference constraint in Nakagami-fading channels", IEEE Transactions on Vehicular Technology, 60(6), pp.2875~2879 (2011)