The port includes an elastomeric hollow port body having a first end and a second end, a first port end portion sealingly attached to the first end of the port body and a second port end portion attached to the second end of the port body. The n- and p-electrodes each absorb less than 25% of incident light per pass at the peak emission wavelength of the LED active region. In another aspect, a differential power control message that is based on an imbalance of transmitted power from multiple antennas of a user equipment is received and based on the message, the imbalance is compensated for by varying a transmit power from one or more of the multiple antennas. Further, each of the plurality of paths has a corresponding sample position, wherein the plurality of symbols comprise a primary synchronization code symbol.