SSMA signal transmission over QPSK modulated signal

M. Morikura; K. Enomoto; S. Kubota; S. Kato

SSMA signal transmission over QPSK modulated signal

M. Morikura, K. Enomoto, S. Kubota, S. Kato

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The superposition of a spread-spectrum multiple-access (SSMA) signal transmission over a quadrature phase-shift-keyed (QPSK) modulated channel is proposed to achieve higher transmission efficiency per transponder and to reduce the lower transmitter power of a small earth station. Experimental results show that under the condition of D/U = 20 dB, the required error probability, P_e = 1 × 10^-4, of the QPSK channel is achieved with only 1-dB degradation by using a coding rate of 7/8 forward error correction (FEC), and the required P_e of 1 × 10^-4 for the SSMA channel is achieved with 7-dB degradation by using a coding rate of = 1/2 FEC. The link budget shows that the proposed scheme makes it possible to use a low-power SSPA to realize small earth stations.

Original language	English
Title of host publication	GLOBECOM '90
Publisher	Publ by IEEE
Pages	751-755
Number of pages	5
ISBN (Print)	0879426322
Publication status	Published - 1990 Dec 1
Externally published	Yes
Event	IEEE Global Telecommunications Conference & Exhibition Part 3 (of 3) - San Diego, CA, USA Duration: 1990 Dec 2 → 1990 Dec 5

Publication series

Name	IEEE Global Telecommunications Conference and Exhibition
Volume	2

Other

Other	IEEE Global Telecommunications Conference & Exhibition Part 3 (of 3)
City	San Diego, CA, USA
Period	90/12/2 → 90/12/5

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "SSMA signal transmission over QPSK modulated signal",

abstract = "The superposition of a spread-spectrum multiple-access (SSMA) signal transmission over a quadrature phase-shift-keyed (QPSK) modulated channel is proposed to achieve higher transmission efficiency per transponder and to reduce the lower transmitter power of a small earth station. Experimental results show that under the condition of D/U = 20 dB, the required error probability, Pe = 1 × 10-4, of the QPSK channel is achieved with only 1-dB degradation by using a coding rate of 7/8 forward error correction (FEC), and the required Pe of 1 × 10-4 for the SSMA channel is achieved with 7-dB degradation by using a coding rate of = 1/2 FEC. The link budget shows that the proposed scheme makes it possible to use a low-power SSPA to realize small earth stations.",

author = "M. Morikura and K. Enomoto and S. Kubota and S. Kato",

year = "1990",

month = dec,

day = "1",

language = "English",

isbn = "0879426322",

series = "IEEE Global Telecommunications Conference and Exhibition",

publisher = "Publ by IEEE",

pages = "751--755",

booktitle = "GLOBECOM '90",

note = "IEEE Global Telecommunications Conference & Exhibition Part 3 (of 3) ; Conference date: 02-12-1990 Through 05-12-1990",

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TY - GEN

T1 - SSMA signal transmission over QPSK modulated signal

AU - Morikura, M.

AU - Enomoto, K.

AU - Kubota, S.

AU - Kato, S.

PY - 1990/12/1

Y1 - 1990/12/1

N2 - The superposition of a spread-spectrum multiple-access (SSMA) signal transmission over a quadrature phase-shift-keyed (QPSK) modulated channel is proposed to achieve higher transmission efficiency per transponder and to reduce the lower transmitter power of a small earth station. Experimental results show that under the condition of D/U = 20 dB, the required error probability, Pe = 1 × 10-4, of the QPSK channel is achieved with only 1-dB degradation by using a coding rate of 7/8 forward error correction (FEC), and the required Pe of 1 × 10-4 for the SSMA channel is achieved with 7-dB degradation by using a coding rate of = 1/2 FEC. The link budget shows that the proposed scheme makes it possible to use a low-power SSPA to realize small earth stations.

AB - The superposition of a spread-spectrum multiple-access (SSMA) signal transmission over a quadrature phase-shift-keyed (QPSK) modulated channel is proposed to achieve higher transmission efficiency per transponder and to reduce the lower transmitter power of a small earth station. Experimental results show that under the condition of D/U = 20 dB, the required error probability, Pe = 1 × 10-4, of the QPSK channel is achieved with only 1-dB degradation by using a coding rate of 7/8 forward error correction (FEC), and the required Pe of 1 × 10-4 for the SSMA channel is achieved with 7-dB degradation by using a coding rate of = 1/2 FEC. The link budget shows that the proposed scheme makes it possible to use a low-power SSPA to realize small earth stations.

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M3 - Conference contribution

AN - SCOPUS:0025555742

SN - 0879426322

T3 - IEEE Global Telecommunications Conference and Exhibition

SP - 751

EP - 755

BT - GLOBECOM '90

PB - Publ by IEEE

T2 - IEEE Global Telecommunications Conference & Exhibition Part 3 (of 3)

Y2 - 2 December 1990 through 5 December 1990

ER -

SSMA signal transmission over QPSK modulated signal

Abstract

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