The TM-l/TL-2 Short Haul Microwave Systems

Friis, R. W.; Jansen, J.F.; Jensen, Rich; King, H.T.

doi:10.1002/j.1538-7305.1966.tb04205.x

Bell System Technical Journal

1966

DOI: 10.1002/j.1538-7305.1966.tb04205.x

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The TM-l/TL-2 Short Haul Microwave Systems

R. W. Friis¹,

J.F. Jansen²,

Rich Jensen³

et al.

Abstract: This paper describes the design and discusses the performance of the TM‐1 and TL‐2 radio relay systems designed for short haul service in the 5925 to 6425 megacycle and the 10,700 to 11,700 megacycle common carrier bands, respectively. Used as a crossband diversity pair, they provide a highly reliable broadband message channel for up to 600 circuits and require little maintenance and relatively low power. These systems are also used to transmit television.

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1967

1987

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Quantization error in differential PCM of laplacian increment inputs

Hayashi

1987

Electron. Comm. Jpn. Pt. I

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Quantization error is one of the important measures that determine the performance of the differential PCM. This paper investigates the DPCM quantization error characteristic and the exact determination of the stationary error density. The input signal considered is a time‐discrete increment process which is similar to the Wiener sequence, but with Laplacian increments. A system of equations satisfied by the characteristic function of the prediction error is derived first and the exact formulas are derived for error probability distributions. Using these distributions the meansquared error, the entropy of the quantized outputs, and the probability of granular error are determined. For the obtained optimum quantization step size, it is shown that the granular error exceeds the slope overload error, that the distribution of quantized outputs is nearly geometrical, that the quantization error is almost equal to that of increments for a large number of quantization levels, and that the results agree with rate distortion theory. The present analysis will be useful to performance analysis of DPCM with stationary non‐Gaussian autoregressive inputs.

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Quantization error in differential PCM of laplacian increment inputs

Hayashi

1987

Electron. Comm. Jpn. Pt. I

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TH-3 Medium-Haul Application: Frequency-Diplexed Auxiliary Channel

Knapp¹,

Seastrand²

1971

Bell System Technical Journal

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Broadband AGC circuits

1967

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The TM-l/TL-2 Short Haul Microwave Systems

Cited by 3 publications

References 8 publications

Quantization error in differential PCM of laplacian increment inputs

Quantization error in differential PCM of laplacian increment inputs

TH-3 Medium-Haul Application: Frequency-Diplexed Auxiliary Channel

Broadband AGC circuits

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