In this paper, the HAP antenna payload is composed of multiple antennas with the same pattern.
Later, in [20] Wyner model has been modified by employing multiple transmitting and receiving antennas at both ends of the communication link in the cellular network where each BS is also composed of multiple antennas.
The large scale array antenna can be composed of such antenna cells.
Another interesting difference is the apparent molecular weight of the PSI-LHCI complex: in seed plants, the PSI antenna system is known to be composed of four antenna polypeptides [42], [43], whereas in Chlamydomonas 9 to 11 proteins were found [44], [45].
This system was basically composed of an antenna, a plastic-wood support where the receiving antenna was fixed in order to maintain a specific height from the terrain, a radio frequency front end circuit for the frequency down-conversion of the received signal and for its digital conversion, and a suitable hardware device to store and process the data (see Figure 1).
The designed receiving system is composed of four antennae, each equipped with five sensors.
For the sparse UCAs composed of directional antenna elements, we could still execute the Root-MUSIC algorithm.
Please also note that this transformation is able to be extended to the case that the sparse UCAs are composed of directional antenna elements.
An alternative to multiple antennas is to consider cooperative communications[12 14], where one or more nodes help the communication between source and destination by acting as relays, achieving spatial diversity even in a network composed of single antenna devices.
If the sparse UCAs are composed of directional antenna elements, its steering vector in the presence of mutual coupling [21] can be described as a ̃ = C m a d (5).
The RF module is composed of an antenna, an amplifier, an analog-to-digital (AD /digital-to-analog (DAD /digital-to-analoginterfAD /digital-to-analogonnecteDAto a convertered processing unit viandn optican finterface
