Enhancement of the ECMA-368 UWB system by means of compatible relaying techniques

We assess the benefits of relaying techniques with regard to the performance of ECMA-368 ultra wideband radio systems. To this end, we closely follow the current ECMA-368 standard and adopt the IEEE 802.15.3a channel models. Focus is on compatible relaying techniques that require a minimum of change to the current system specifications. In particular, we consider decode-and-forward (D&F) and amplify-and-forward (A&F) relaying and combine these techniques with a distributed version of cyclic delay diversity (CDD) performed across relays. Our results show that, as long as the relays are located sufficiently close to the source node, both D&F and A&F relaying achieve significant performance gains over direct transmission, even in the case of correlated shadowing. Furthermore, we find that the distributed CDD scheme yields little improvements compared to simple A&F and D&F relaying, since the employed channel coding scheme already picks up a large amount microscopic diversity.

[1]  G.R. Aiello,et al.  Design of a multiband OFDM system for realistic UWB channel environments , 2004, IEEE Transactions on Microwave Theory and Techniques.

[2]  V. Srinivasa Somayazulu,et al.  Ultrawideband radio design: the promise of high-speed, short-range wireless connectivity , 2004, Proceedings of the IEEE.

[3]  K. J. Ray Liu,et al.  Bandwidth-efficient OFDM cooperative protocol with applications to UWB communications , 2006, IEEE Wireless Communications and Networking Conference, 2006. WCNC 2006..

[4]  Georgios B. Giannakis,et al.  Wireless multicarrier communications , 2000, IEEE Signal Process. Mag..

[5]  Zhiwei Lin,et al.  Kronecker Modelling for Correlated Shadowing in UWB MIMO Channels , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[6]  Gerhard Bauch,et al.  Cyclic delay diversity with bit-interleaved coded modulation in orthogonal frequency division multiple access , 2006, IEEE Transactions on Wireless Communications.

[7]  Andreas F. Molisch,et al.  Channel models for ultrawideband personal area networks , 2003, IEEE Wireless Communications.

[8]  J.-C. Belfiore,et al.  On the Decode-and-Forward Cooperative Diversity with Coherent and Non-Coherent UWB Systems , 2006, 2006 IEEE International Conference on Ultra-Wideband.

[9]  R M Morey,et al.  Response to FCC 98-208 notice of inquiry in the matter of revision of part 15 of the commission's rules regarding ultra-wideband transmission systems , 1998 .

[10]  Kin K. Leung,et al.  Cooperative Orthogonal MIMO-Relaying for UWB Ad-Hoc Networks , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[11]  G. Giannakis,et al.  Wireless Multicarrier Communications where Fourier Meets , 2022 .

[12]  Gregory W. Wornell,et al.  Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks , 2003, IEEE Trans. Inf. Theory.

[13]  Elisabeth de Carvalho,et al.  Hybrid Forwarding Scheme for Cooperative Relaying in OFDM Based Networks , 2006, 2006 IEEE International Conference on Communications.

[14]  Honggang Zhang,et al.  Space-Frequency Coded Cooperative Scheme Among Distributed Nodes In Cognitive UWB Radio , 2005, 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications.

[15]  Hyoung-Kyu Song,et al.  Performance Improvement of Cooperative MB-OFDM System Based Coming Home Network , 2007, IEEE Transactions on Consumer Electronics.