Method of adjusting the length of a data block in a time-divisio

Details Method of adjusting the length of a data block in a time-divisio Method of adjusting the length of a data block in a time-divisio

1994-07-19

1997-02-25

Chin, Wellington

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375231, 375348, 370465, H03D 100, H03H 730

Patent

active

056065809

ABSTRACT:
A method for adjusting the length of a data block in a time-division multiple access communication system includes estimating the impulse response of a communication channel from received symbols of a reference sequence, estimating a signal-to-noise ratio from the channel impulse response, and estimating a maximum Doppler shift. Using these estimations, upper and lower limit functions of a normalized estimated mean squared error are calculated, and the length of the data block is adjusted to an optimal length determined from the upper and lower limit functions.

REFERENCES:
patent: 5313457 (1995-03-01), Hostetter
patent: 5450395 (1995-09-01), Hostetter et al.
patent: 5519727 (1996-03-01), Okanoue et al.
patent: 5537438 (1996-07-01), Mourot et al.
G. W. Davidson, "An Investigation of Block-Adapative Decision Feedback Equalization for Frequency Selective Fading Channels", Canadian Journal Of Electrical And Computer Engineering, vol. 13, No. 3-4, 1988 pp. 106-111.
A. Miliewski, "Periodic Sequnces with Optimal Properties for Channel Estimation and Fast Start-Up Equalization", IBM Journal Of Research And Development, vol. 27, No. 5, Sep. 1993, pp. 426-431.

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