DTTB System Multipath Performance Improvement

0

3

15

30

15

19

35

Multipath Level ( - dB)

(Single Echo)

8VSB

COFDM

(64QAM,2/3,1/8)

C/N Threshold (dB)

Indoor Antennas

Outdoor Antennas

W.T.Dickson 16 April 98

(Conditions: Static multipath, Equal Rx NF, No Co-channel or impulse interference)

COFDM

Current implementations

(April 1998)

(Nov. 1997)

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(above curve)

(Below curve)

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