Pilot-aided ML schemes for joint beamforming and channel estimation in WCDMA systems

This paper proposes semi-blind channel estimation and interference cancellation schemes for the reception of pilot-aided signals in WCDMA systems. It is shown that the performance of classical training-based schemes is severely degraded due to the code-multiplexing (as opposed to time-multiplexing) of traffic and pilot signals. The time-dispersivity of the channel destroys the orthogonality between the traffic signal and the pilot, and consequently the traffic signal appears as a new interfering signal for the channel estimation/beamforming algorithm. In order to avoid this effect, we propose techniques that exploit both the presence of the training sequence and the structure of the traffic signal in a semi-blind fashion.Peer ReviewedPostprint (published version

In memoriam Josep Maria Palau i Camps (1914-1996)

Abstract not availabl

La fauna endèmica Iberobalear i la seva conservació

Ibero-balearic endemic fauna and its conservation. The Iberian peninsula and the Balearic Islands constitute two outstanding territories in terms of animal biodiversity and endemic species. The continental freshwater fish, the reptiles and amphibians, and to a lesser extent birds, make up the groups of most unique vertebrates and those most renowned as threatened species. The biodiversity of Iberian invertebrates seems very high, but huge research efforts and accurate studies are necessary before their diversity can be quantified

First record of Ocinebrina hispidula (Pallary, 1904) (Mollusca: Gastropoda: Muricidae) to Ibero-Balearic sea

Abstract not availabl

Estudi preliminar sobre la fauna d'aranèids (Arachnida, araneae)

S'estudia la fauna d'aranèids de l'illa de Cabrera i de 16 dels seus illots. Sobre una fauna coneguda de 7 tàxons se citen 29 espècies més, cinc de les quals resulten esser noves per a les Balears: Spermophora valentiana Araneus angulatus, Neoscona dalmatica, Nemoscolus laurae i Nuctenea umbratica. Tres endemismes de les Balears estan presents a l'Arxipèlag: Nemesia brauni, Harpactea dufouri i Malthonica balearica.The spiders from the Island of Cabrera and from 16 of it's islets are recorded. Twenty nine species are added to the 7 taxa already known. Five of them are new for the Balearic Islands: Spermophora valentiana Araneus angulatus, Neoscona dalmatica, Nemoscolus laurae i Nuctenea umbratica. Three endemic species of the Balearic Islands are found on this Archipelago: Nemesia brauni, Harpactea dufouri and Malthonica balearica

High resolution probe of coherence in low-energy charge exchange collisions with oriented targets

The trapping lasers of a magneto-optical trap (MOT) are used to bring Rb atoms into well defined oriented states. Coupled to recoil-ion momentum spectroscopy (RIMS), this yields a unique MOTRIMS setup which is able to probe scattering dynamics, including their coherence features, with unprecedented resolution. This technique is applied to the low-energy charge exchange processes Na$^+$+Rb($5p_{\pm 1}$) $\rightarrow$ Na($3p,4s$)+Rb$^+$. The measurements reveal detailed features of the collisional interaction which are employed to improve the theoretical description. All of this enables to gauge the reliability of intuitive pictures predicting the most likely capture transitions