A novel time spreading method for down-link OFDM-code division multiplexing systems

Myeongyun Cho, Hangyu Cho, Sangmin Ro, Daesik Hong

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In this paper, orthogonal frequency division multiplexing - code division multiplexing (OFDM-CDM) using a novel time spreading scheme is proposed as an alternative to multicarrier code division multiple access (MC-CDMA) systems. A residual frequency diversity gain can be fully obtained with OFDM-CDM through the adaptation of the proposed time spreading scheme, which has a known frequency-hopping pattern over whole transmission bandwidth. If there is enough frequency space to hop and the space is larger than the coherent bandwidth of channel, we can exploit full frequency diversity in any channel environment. Simulation results verify that the proposed method achieves a gain of about 4dB for BER of 10-3 compared to the conventional OFDM-CDM, which achieves similar performance as frequency-interleaved MC-CDMA.

Original languageEnglish
Pages (from-to)1845-1848
Number of pages4
JournalIEEE Vehicular Technology Conference
Volume60
Issue number3
Publication statusPublished - 2004 Dec 1

Fingerprint

Multiplexing
Orthogonal Frequency Division multiplexing (OFDM)
Orthogonal frequency division multiplexing
Telecommunication links
Division
Code division multiple access
Multicarrier
Code Division multiple Access
Bandwidth
Frequency hopping
Frequency Hopping
Diversity Gain
Verify
Alternatives
Simulation

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Cho, Myeongyun ; Cho, Hangyu ; Ro, Sangmin ; Hong, Daesik. / A novel time spreading method for down-link OFDM-code division multiplexing systems. In: IEEE Vehicular Technology Conference. 2004 ; Vol. 60, No. 3. pp. 1845-1848.
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A novel time spreading method for down-link OFDM-code division multiplexing systems. / Cho, Myeongyun; Cho, Hangyu; Ro, Sangmin; Hong, Daesik.

In: IEEE Vehicular Technology Conference, Vol. 60, No. 3, 01.12.2004, p. 1845-1848.

Research output: Contribution to journalConference article

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