Weitere Artikel dieser Ausgabe durch Wischen aufrufen
We investigate the performance of adaptive decode-forward (ADF), amplify-forward (AF), and hybrid decode-amplify-forward (HDAF) relaying protocol. Specifically, we derive the closed-form expression of symbol error probability (SEP) for these three relaying protocols. For the AF protocol, we derive a simpler and more tractable final result than previously published work. Furthermore, analyzing the high signal-to-noise ratio (SNR) regime, we derive an asymptotically tight approximation for SEP. The approximation is used to assess an important aspect between the three different relaying protocols, i.e., the SEP performance gain of HADF over the two conventional relaying schemes ADF and AF. It is shown that the performance gain of HDAF over ADF and AF significantly depends on the relative value of channel conditions between source-to-relay and relay-to-destination links. Interestingly, it is shown that HDAF has no benefit compare to the two others if the relay is located close to the source. In contrast, the performance gains of HDAF over the ADF and AF scheme are remarkably large as the relay moves nearby the destination. Specifically, the numerical results given as well as our analysis indicate that for QPSK modulation, HDAF outperforms ADF and AF with a performance improvement by 5 dB and 6 dB, respectively.
Sendonaris A, Erkip E, Aazhang B: User cooperation diversity—part I: system description. IEEE Transactions on Communications 2003, 51(11):1927-1938. 10.1109/TCOMM.2003.818096 CrossRef
Sendonaris A, Erkip E, Aazhang B: User cooperation diversity—part II: implementation aspects and performance analysis. IEEE Transactions on Communications 2003, 51(11):1939-1948. 10.1109/TCOMM.2003.819238 CrossRef
Nabar RU, Bölcskei H, Kneubühler FW: Fading relay channels: performance limits and space-time signal design. IEEE Journal on Selected Areas in Communications 2004, 22(6):1099-1109. 10.1109/JSAC.2004.830922 CrossRef
Yu M, Li J: Is amplify-and-forward practically better than decode-and-forward or vice versa? Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '05), March 2005, Philadenphia, Pa, USA 3: 365-368.
Can B, Yomo H, De Carvalho E: Hybrid forwarding scheme for cooperative relaying in OFDM based networks. Proceedings of the IEEE International Conference on Communications, June 2006, Istanbul, Turkey 10: 4520-4525.
Bao X, Li J: Efficient message relaying for wireless user cooperation: decode-amplify-forward (DAF) and hybrid DAF and coded-cooperation. IEEE Transactions on Wireless Communications 2007, 6(11):3975-3984. CrossRef
Hasna MO, Alouini M-S: End-to-end performance of transmission systems with relays over Rayleigh-fading channels. IEEE Transactions on Wireless Communications 2003, 2(6):1126-1131. 10.1109/TWC.2003.819030 CrossRef
Ribeiro A, Cai X, Giannakis GB: Symbol error probabilities for general cooperative links. IEEE Transactions on Wireless Communications 2005, 4(3):1264-1273. CrossRef
Murugan A, Azarian K, Gamal HE: Cooperative lattice coding and decoding in half-duplex channels. IEEE Journal on Selected Areas in Communications 2007, 25(2):268-278. CrossRef
Kumar PV, Vinodh K, Anand M, Elia P: Diversity-multiplexing gain tradeoff and DMT-optimal distributed space-time codes for certain cooperative communication protocols: overview and recent results. Proceedings of the Information Theory and Applications Workshop, January 2007, San Diego, Calif, USA
Simon MK, Alouini M-S: A unified approach to the performance analysis of digital communication over generalized fading channels. Proceedings of the IEEE 1998, 86(9):1860-1877. 10.1109/5.705532 CrossRef
Simon MK, Alouini M-S: Digital Communication over Fading Channels: A Unified Approach to Performance Analysis. John Wiley & Sons, New York, NY, USA; 2000. CrossRef
Kumar KR, Caire G: Coding and decoding for the dynamic decode and forward relay protocol. Proceedings of the IEEE International Symposium on Information Theory, 2008 2380-2384.
Gradshteyn IS, Ryzhik IM: Table of Integrals, Series, and Products. 6th edition. Academic Press, San Diego, Calif, USA; 2000. MATH
Gradshteyn IS, Ryzhik IM: Errata for Table of Integrals, Series, and Products. 6th edition. Academic Press, Orlando, Fla, USA; 2005.
- On the Performance Gain of Hybrid Decode-Amplify-Forward Cooperative Communications
Trung Q. Duong
- Springer International Publishing
- EURASIP Journal on Wireless Communications and Networking
Elektronische ISSN: 1687-1499
Neuer Inhalt/© ITandMEDIA, Product Lifecycle Management/© Eisenhans | vege | Fotolia