Quasi-orthogonal multi-carrier CDMA

Yutaka Jitsumatsu; Tohru Kohda

doi:10.1109/GLOCOM.2008.ECP.229

Quasi-orthogonal multi-carrier CDMA

Yutaka Jitsumatsu, Tohru Kohda

Mathematical Informatics

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

6 Citations (Scopus)

Abstract

It is believed that the dimension of the signal space with interval T and bandwidth W is 2WT, while we cannot make the out-of-band and out-of-time energies of any waveform zero. We propose a Gaussian pulse shaping for multi-carrier CDMA systems to utilize the time and frequency resources effectively. Gaussian pulses have ICI and ISI; they are not orthogonal. Markovity of spreading codes save the drawback of ICI and ISI. Overlapped Gaussian pulses increase the spectral efficiency.

Original language	English
Title of host publication	2008 IEEE Global Telecommunications Conference, GLOBECOM 2008
Pages	1157-1161
Number of pages	5
DOIs	https://doi.org/10.1109/GLOCOM.2008.ECP.229
Publication status	Published - Dec 1 2008
Event	2008 IEEE Global Telecommunications Conference, GLOBECOM 2008 - New Orleans, LA, United States Duration: Nov 30 2008 → Dec 4 2008

Publication series

Name	GLOBECOM - IEEE Global Telecommunications Conference

Other

Other	2008 IEEE Global Telecommunications Conference, GLOBECOM 2008
Country	United States
City	New Orleans, LA
Period	11/30/08 → 12/4/08

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/GLOCOM.2008.ECP.229

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abstract = "It is believed that the dimension of the signal space with interval T and bandwidth W is 2WT, while we cannot make the out-of-band and out-of-time energies of any waveform zero. We propose a Gaussian pulse shaping for multi-carrier CDMA systems to utilize the time and frequency resources effectively. Gaussian pulses have ICI and ISI; they are not orthogonal. Markovity of spreading codes save the drawback of ICI and ISI. Overlapped Gaussian pulses increase the spectral efficiency.",

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AU - Kohda, Tohru

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N2 - It is believed that the dimension of the signal space with interval T and bandwidth W is 2WT, while we cannot make the out-of-band and out-of-time energies of any waveform zero. We propose a Gaussian pulse shaping for multi-carrier CDMA systems to utilize the time and frequency resources effectively. Gaussian pulses have ICI and ISI; they are not orthogonal. Markovity of spreading codes save the drawback of ICI and ISI. Overlapped Gaussian pulses increase the spectral efficiency.

AB - It is believed that the dimension of the signal space with interval T and bandwidth W is 2WT, while we cannot make the out-of-band and out-of-time energies of any waveform zero. We propose a Gaussian pulse shaping for multi-carrier CDMA systems to utilize the time and frequency resources effectively. Gaussian pulses have ICI and ISI; they are not orthogonal. Markovity of spreading codes save the drawback of ICI and ISI. Overlapped Gaussian pulses increase the spectral efficiency.

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