The interleaved bits are then mapped to the QPSK constellation of Figure 4.
In the case of a phase rotation ϕ k induced by the channel or the HPA, the received constellation of Figure 5a converts to that of Figure 5b.
As in [2], we have found many local optima, some of them were rotated version of the constellations of Figure 2 while others appeared as their rhombic transformation.
The largest and most engaging exhibit is "I remember swimming in the lake at night in the summertime" (2008), a multipanel drawing with a collage of tiny palm trees surrounding a pond, the sky filled with a constellation of little figures spinning and floating in space.
As a counterpoint to Sara's voice of maternal caution, Carpenter offers a constellation of male figures, stand-ins for Jason's long-gone father: the savvy, cynical Capitol Hill godfather; a windy, T. E. Lawrence-quoting commanding officer; a laconic Zen master of a platoon chief.
Several royal Egyptian tombs of the 2nd millennium bce include paintings of constellation figures, but these cannot be considered accurate maps.
Figure 3 Constellation optimization for K=4 over fixed channel ; for each point, the letter specifies the constellation (of those in Figure 2) typically obtained.
Figure 2 QPSK constellation of X 1. Figure 3 16QAM constellation of X 2, X R. As illustrated in Figures 2 and 3, the stronger link C1 transmits signals by low-order modulation (QPSK), while the weaker link C2 transmits signals by high-order modulation (16QAM).
Those passing through Rockefeller Center over the next seven weeks will no doubt fall prey to that temptation when they encounter "Human Nature," a constellation of nine towering bluestone figures that the artist Ugo Rondinone has set on the plaza in front of 30 Rock.
