Mathematics
Symbol Error Rate
100%
Channel Estimation
99%
Orthogonal Frequency Division multiplexing (OFDM)
92%
Underwater Acoustics
91%
Doppler
81%
Expectation Maximization
74%
Maximum a Posteriori
73%
Receiver
68%
Mean square error
56%
Transmit Diversity
55%
Delay Estimation
53%
Doppler Shift
51%
Extremes
50%
Space-time
48%
Rayleigh Fading Channel
47%
Channel Model
43%
Multipath
42%
Path
38%
Attenuation
35%
Estimation Algorithms
35%
Antenna
34%
Performance
33%
Robust Estimation
32%
Spacing
30%
Acoustics
30%
Time-varying
27%
Estimate
25%
Communication
25%
Propagation
25%
Unknown
18%
Converge
17%
Form
11%
Engineering & Materials Science
Underwater acoustics
67%
Channel estimation
57%
Orthogonal frequency division multiplexing
50%
Mean square error
34%
Doppler effect
23%
Quadrature phase shift keying
22%
Multipath propagation
21%
Rayleigh fading
19%
Acoustics
15%
Antennas
12%
Communication
9%
Physics & Astronomy
underwater acoustics
67%
receivers
10%
Rayleigh fading
9%
quadrature phase shift keying
7%
estimates
7%
performance
5%
antennas
5%
time lag
5%
communication
5%
spacing
4%
attenuation
4%
expansion
3%
shift
3%
propagation
3%
acoustics
3%
Business & Economics
Symbol
31%
Fading
19%
Propagation
15%
Lag
12%
Time-varying
12%
Performance
10%
Communication
8%
Factors
4%