Abstract
In this paper, we propose a static hybrid multihop relaying protocol where some relays amplify the received signal whereas the remaining ones use decode and forward (DF) relaying. The relaying mode in each relay is set using the distance between the different nodes and the average SNR. The exact and asymptotic bit error probabilities, the block error probability and the throughput of hybrid automatic repeat request (HARQ) protocols are derived. Simulation results are provided in different contexts to compare the performance of hybrid relaying to conventional AF and DF relaying. In the second part of the paper, we propose a static hybrid amplify and forward (AF) and DF relaying using distributed space-time coding (DSTC). Relays close to the source amplify the received signal, and the remaining relays transmit only if they correctly decoded. All AF relays and DF relays that have correctly decoded transmit using DSTC in order to benefit from spatial diversity. The proposed protocol offers better performance than AF relaying using DSTC and similar performance to DF relaying using DSTC. However, the complexity and transmission delays of the proposed static hybrid AF-DF relaying is lower than that of DF relaying since decoding is not performed at AF relays.










Similar content being viewed by others
References
Anghel P A (2004) Exact symbol error probability of a cooperative network in a Rayleigh fading environment. IEEE Trans Wirel Commun 3 (5): 1416–1421
Hasna M O, Alouini M S (2003) End-to-end performance of transmission systems with relays over rayleigh fading channels. IEEE Trans Wireless Commun 2: 1126–1131
Yilmaz F., Kucur O, Alouini M S (2010) A novel framework on exact average symbol error probabilities of multihop transmission over amplify-and-forward relay fading channels. IEEE ISWCS
Amara S, Boujemaa H (2011) Multihop multibrach DF relaying for cooperative systems. IEEE Vehicular Technology Conference Spring, Budapest
Souryal M R, Vojcic B R (2006) Performance of amplify-and-forward and decode-and-forward relaying in rayleigh fading with turbo codes. ICASSP 4: 681–684
Duong T Q, Zepernick H J (2009) On the performance gain of hybrid decode-amplify-forward cooperative communications. EURASIP J Wirel Commun Netw 2009
Li Q, Ting S H, Pandharipande A, Han Y. (2009) Adaptive two-way relaying and outage analysis. IEEE Trans Wirel Commun 8 (6): 3288–3299
Fricke J C, Butt M M, Hoeher P A (2009) Quality-oriented adaptive forwarding for wireless relaying. IEEE Commun Lett 12 (3): 200–201
Bao X, Li J T (2007) Efficient message relaying for wireless user cooperation: decode-amplify-forward (DAF) and hybrid DAF and coded-cooperation. IEEE Trans Wirel Commun 6 (11): 3975–3984
Bouanen S, Boujemaa H, Ajib W (2011) Threshold based adaptive decode amplify forward relaying protocol for cooperative systems. IEEE Wireless and Mobile Computing Conference, Istanbul, pp 725–730
Boujemaa H (2011) Static hybrid amplify and forward (AF) and decode and forward (DF) relaying for cooperative systems. Elsevier, Phys Commun 4: 196–205
Ben Said M, Boujemaa H (2010) Static hybrid amplify decode and forward cooperative ARQ with opportunistic relaying, IEEE Intern. Conference Commun. Computing and Control Applications, Hammamet
Nabar R U, Bolcskei H, Kneubuhler F W (2004) Fading relay channels : performance limits and space time signal design. IEEE J Sel Areas Commun. 22 (6): 1099–1109
Laneman J N, Wornell G. W. (2003) Distributed space time coded protocols for exploiting cooperative diversity in wireless networks. IEEE Trans Inform Theory 49 (10): 2415–2425
Jing Y, Hassibi B (2006) Distributed space time coding in wireless relay networks. IEEE Trans Wirel Commun 5 (12): 3524–3536
Maw R L, Martin P A, Taylor D P (2008) Cooperative relaying with CPFSK and distributed space time trellis codes. IEEE Commun Lett 12 (5): 356–358
Hucher C, Ben Othman G R, Belfiore J C AF and DF protocols based on Alamouti ST Code, IEEE International Symposium on Information Theory ISIT, pp. 1526-1530, Nice, 24-29 June 2007
Sarkiss M, Ben Othman G R, Damen M O, Belfiore J C (2011) Construction of new delay tolerant space time codes. IEEE Trans Inf Theory 56 (6): 3567–3581
Proakis J G (1995) Digital communications, 3rd edn. Mc Graw-Hill
Larson E G, Stoica P (2003) Space Time Block Coding for Wireless Communications. Cambridge University
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by the Research Center, the College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia, under Grant no. RC 130398. The authors are grateful for this support. This work was also supported by the Deanship of Scientific Research, King Saud University. The authors are grateful for this support too.
Rights and permissions
About this article
Cite this article
Touati, S., Boujemaa, H. & Abed, N. Static hybrid multihop relaying and two hops hybrid relaying using DSTC. Ann. Telecommun. 70, 171–180 (2015). https://doi.org/10.1007/s12243-014-0438-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12243-014-0438-3