The invention relates to an integrated antenna for a portable computer. Volatile memory communicates with the DVDHDD control module and stores volatile data relating to the operation of the DVD assembly and the HDD assembly. The rotation of the crankshaft is transmitted to the output shaft through the intermediate shaft. In this way, a depletion layer is formed directly under the electrode at the surface of the p type silicon substrate. The wireless device stores the received mode information and selects its operating mode according to the stored mode information, selecting the second mode when this does not prevent the prevent communication with or among the neighboring wireless devices. The system also estimates a spatial correlation matrix Rnn for each subcarrier from noise and interference samples obtained during the reception of the training signals through two or more receive-signal paths.