Exact(3)
They follow the intuition that a large array of antennas enables to form sharp beams such that the desired and the interfering signal establish complementary spaces.
Hence, higher transmit powers can be allocated to the sharp beams towards the secondary RXs resulting in higher SINR values for smaller ξ values.
The ability of the secondary TXs to focus sharp beams towards the corresponding secondary RXs while simultaneously directing nulls towards other secondary and primary RXs reduces as the channel knowledge decreases (i.e., when ξ increases).
Similar(57)
They can also, when suitably focused, give a relatively sharp beam.
I had gone only a few steps when I felt something like a sharp beam of light pierce my skin.
In The Narrow Road to the Deep North, Richard Flanagan takes on the legacy of the second world war for both Australians and Japanese; Neel Mukherjee, in The Lives of Others, chooses Calcutta in the 1960s for his setting: and yet both these books cast a sharp beam on the present, too – as does The Wake.
While discrete aurora was also observed in the north zenith of the YRS and displayed as rayed sharp beam structures as shown in Fig. 4.
In 1960, Theodore Maiman of the Hughes Research Institute in Malibu built the first working laser, largely based on their design, producing a sharp beam of ruby-red light.
However, even ignoring the presence of significant side lobes for the broadside beam pattern, these sharper beams prospect severe feasibility issues, as the system sensitivity to self noise and other perturbations grows considerably (see Tables 1 and 2, showing that the self-noise gain at broadside and end-fire drops down to −37.5 and −24.1 dB, respectively!).
Sharp, steerable beams might be an expedient solution to this issue, as they could follow a vehicle along its path.
A nearby projector shoots sharp concentrated beams of light at the rotating wheel, illuminating the character's narrow silhouette.
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