Question: the constellation diagram representation is for:Select one:a. PSKb. ASKc. 4 PSKd. FSK a.PSK b.ASK c.4PSK d.FSK
Carrier frequency is a set of amplitudes, so that different signal sequences can be mapped to different amplitude levels. Select base vector: Among them. (a) the constellation diagram of MQAM-16 (b), the constellation diagram of MQAM-64 Figure three Then the MQAM signal can be represented ...
Figure 1. Schematic diagram of wireless communication system. The received signal r(t) can be expressed as 𝑟(𝑡)=𝑠(𝑡)*𝑐(𝑡)+𝑛(𝑡)rt=st*ct+nt (1) where s(t) is the modulation signal at time t, c(t) is the impulse response of the wireless channel, and n(...