Cooperative transmission for broadband wireless communications systems
Acronym:ECO
Code:TEC2004-04526
Funder:Spanish Government
Start date:2005 January 1st
End date:2007 December 31st
Web site: http://gps-tsc.upc.es/comm2/eco/index.html
logoeco
SPCOM Participants:Adrian Agustin de Dios, Juan Fernández Rubio, Luis García Ordóñez, Josemanuel Huerta Guillén, Maribel Madueño Ruiz, Olga Muñoz Medina, Jaume Riba Sagarra, Josep Sala Alvarez, Josep Vidal Manzano and Javier Villares Piera
SPCOM Responsible:Josep Vidal Manzano

Summary

The design of future wireless communications systems delivering high bitrates is currently being planned through the use of ever increasing carrier frequencies and larger bandwidths. At these frequencies, the path loss is more important than for the second generation systems and, as a consequence, an effective geographic coverage implies a higher density of base stations (or access points) and an increased cost of the infrastructure. Density increase will consequently lead to an increase of the offered bandwidht per square km which most likely will not be utilized according to the expected demands. In this situation, the operators are incurring a high risk.

To remedy this situation it is necessary to design new transmission schemes able to overcome the tradeoff between coverage and bitrate. The schemes proposed in this project are able to achieve this by dropping the paradigm of communication between two players (transmitter and receiver) just by introducing one (or many) third players that cooperate with the transmitter and acts as relay. This cooperative transmission principle builds in practice a virtual array of antennas (MIMO) yielding, not only the known benefits in terms of capacity - coverage (or both), but also macrodiversity and hence robusteness to shadowing.

Latest Related Journal publications

[1] A. Agustin de Dios and J. Vidal, "Amplify-and-forward cooperation under interference-limited spatial reuse of the relay slot", IEEE Transactions on Wireless Communications, Vol. 5, May 2008, pp. 1952 - 1962. | Details | BibTex

[2] O. Muñoz Medina, J. Vidal and A. Agustin de Dios, "Linear transceiver design in non regenarative relays with channel state information", IEEE Transactions on Signal Processing, Vol. 55, June 2007, pp. 2593 - 2604. | Details | Full document | BibTex

[3] A. Agustin de Dios, J. Vidal and O. Muñoz Medina, "Hybrid Turbo FEC/ARQ Systems and Distributed Space-Time Coding for Cooperative Transmission", International Journal of Wireless Information Networks, Vol. 12, December 2005, pp. 263 - 280. | Full document | BibTex


Latest Related Conference publications

[1] A. Agustin de Dios, J. Vidal and O. Muñoz Medina, "Protocols and resource allocation for the two-way relay channel with half-duplex terminals", IEEE International Conference on Communications, June 2009. | Details | Full document | BibTex

[2] A. Agustin de Dios, J. Vidal and O. Muñoz Medina, "Adaptive bitrate and resource allocation for relay-assisted ARQ transmissions", IEEE International Conference on Communications, June 2009. | Details | Full document | BibTex

[3] A. Agustin de Dios, J. Vidal and O. Muñoz Medina, "Analytical Resource Optimization for the DF Relay-assisted Transmission under HARQ", IEEE Vehicular Technology Conference Spring, April 2009. | Details | Full document | BibTex


Latest Related Books

[1] S. Valentin, H. S. Lichte, H. Karl, G. Vivier, S. Simoens, J. Vidal and A. Agustin de Dios, "Implementing Cooperative Wireless Networks. Towards Feasibility and deployment. Chapter 8: Cognitive Wireless Networks, Concepts, Methodologies and Visions inspiring the age of enlightment of wireless communications", Springer, September 2007. | BibTex





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