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1.5
LOS channel
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0
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0
1
2
3
4
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(a) LOS channel reshaping profile
6
7
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Tap number
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10
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7
9
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0
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Tap number
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&,'()`O (±+.-/-1023$'(54 -10/6
Mean Square Error (averaged over 1000 runs) at SNR = 20dB
1
0.5
Log MSE
0
LMS (Cold Start)
−0.5
−1
LMS (Power Ratio)
−1.5
RLS
36
−2
0
96
100
346
200
300
400
500
Iteration n
600
700
800
900
1000
¬.­®d¯"&N¯\±¿¢µX$¶>Âu®¢¶)µNÃ)¶@¿ÿ11Ãa;ÿ4¿¢Âc±³=´µNµd¶>·°
(a) Constant length training sequences
(b) Different length training sequences
1
1
........ LMS (Cold start)
0
− − − RLS
0
[Ntrain = 64]
−1
−2
−2
−3
−4
−5
−5
−6
−6
10
15
SNR (dB)
20
[Ntrain = 40]
−3
−4
−7
[Ntrain = 350]
____ LMS (Power Ratio) [Ntrain = 100]
− − − RLS
−1
Log SER
Log SER
........ LMS (Cold start)
[Ntrain = 64]
____ LMS (Power Ratio) [Ntrain = 64]
−7
10
15
SNR (dB)
¬.­®d¯`!N¯“ÃXùD¹„Å6¿¢·rÂzÂu¿¢Â“¾´"Åu¶>½ÿ4¿¢Â¢´Âz­¿¢¼N½“ÅuÂT´­µN­µd®B½z¶"ü¼d¶>µdÃ>¶/·¶)µN®Åz³d½W¿ ø“ÅzÂz´­µeÀ
20