Test results for on‐board burst‐mode CQPSK modem

Kazekami, Y.; Sawada, Hirokazu; Ishizu, T.; Betaharon, K.

doi:10.1002/sat.4600050214

Int. J. Satell. Commun.

1987

DOI: 10.1002/sat.4600050214

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Test results for on‐board burst‐mode CQPSK modem

Y. Kazekami

Hirokazu Sawada

T. Ishizu

et al.

Abstract: An on‐board burst‐mode modem for coherent processing of a QPSK signal at 120 Mb/s is realized with small, low mass and low power consumption. This paper presents the hardware configuration and the various measured test data including physical characteristics. The overall performance through an earth station modem is also presented.

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1987

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On‐board processing for communications satellites: Systems and benefits

Nuspl¹,

Peters²,

Abdel-Nabi³

et al. 1987

Int. J. Satell. Commun.

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This paper discusses on‐board processing systems and associated benefits including connectivity, increased capacity, lower costs and system improvements; there are complex trade‐offs in design approaches. Several architectures are described which use a microwave switch matrix, a baseband switch matrix or baseband processor. Regeneration (an advanced form of on‐board processing) consists of demodulation followed by remodulation and provides access to baseband signals. The link advantages of this method are clearly presented for 120Mb/s TDMA and for IBS at 1/544 Mb/s. Additionally, there are discussions of five architectures using multi‐carriers per transponder, and their advantages and disadvantages. Some considerations of using on‐board decoding and baseband processing functions are also briefly presented.

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On‐board processing for communications satellites: Systems and benefits

Nuspl¹,

Peters²,

Abdel-Nabi³

et al. 1987

Int. J. Satell. Commun.

View full text Add to dashboard Cite

show abstract

On‐board processing for communication satellites: Technologies and implementations

Betaharon¹,

Kinuhata²,

Nuspl³

et al. 1987

Int. J. Satell. Commun.

Self Cite

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This paper presents technologies which are key candidates for advanced on‐board processing for future communication satellites. Satellite switching centres for microwave and baseband signals, on‐board coherent modems for 120Mb/s burst‐mode TDMA systems and their technologies are discussed. A brief description of on‐board demultiplexing and demodulation of low bit rate carriers is offered and study results on investigation of on‐board unique word detectors and large buffers are presented.

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Test results for on‐board burst‐mode CQPSK modem

Cited by 2 publications

References 0 publications

On‐board processing for communications satellites: Systems and benefits

On‐board processing for communications satellites: Systems and benefits

On‐board processing for communication satellites: Technologies and implementations

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