Link Optimisation for MIMO Communication Systems

The MIMO antenna array techniques promise to help fulfil the requirements of future networks by offering high space diversity-gain and enhanced data rates. However, there are some considerable challenges with MIMO techniques that must be overcome. The most serious of which is the co-channel interference impairment. In order to overcome such a challenge, precoding is introduced as an excellent choice for complementing the MIMO systems. Precoding diverges in two branches: the linear algorithms which can achieve reasonable performance at relatively low complexity levels, and the non-linear techniques which can achieve near optimal capacity but at the expense of higher complexity. However, the latter shows that any known interference at the transmitter can be subtracted at the receiver without the penalty of degrading the radio resources. Following that trend, with the intention to find an efficient precoding technique that is able to offer a good trade-off between efficacy and complexity, we discover that one of the viable choices is to deal with the power constraint during the precoding stage.

Autorentext

Mr. Pineda Rico received the PhD degree from The University of Manchester United Kingdom in 2009 and currently is working with the Communications Group of Facultad de Ciencias in the Universidad Autónoma de San Luis Potosí, México. His main research interests are MIMO precoding, space-time coding and other state-of-the-art wireless techniques.