【判断题】In a frequency selective fading channel, the received signal can be expressed by【图片】, where x(t) and n(t) denote the transmit signal and AWGN, and【图片】 denotes the fading coefficient.
【单选题】表证己解而喘咳末愈的体虚患者宜用( )。
【判断题】因QP=ΔH,QV=ΔU,所以QP与QV都是状态函数。()
【判断题】For AWGN channel, QPSK with Gray mapping can achieve the same bit error rate as a coherent BPSK in white Gaussian noise, but the bandwidth efficiency of BPSK is twice that of QPSK.
【判断题】For AWGN channel, 16-PSK requires less signal energy than the 16-FSK for the fixed noise power spectrum density and symbol error rate.
【单选题】根据《社会保险基金行政监督办法》规定,社会保险基金包括养老保险基金、医疗保险基金、失业保险基金、工伤保险基金和生育保险基金。其中,()数额最大,在整个社会保险体系中占有重要地位。
【多选题】工伤保险基金包括()
D.
社会对工伤保险的捐赠以及依法纳入工伤保险基金的其他资金