Presentation 2008-07-17
Theoretical Analysis of Multi-User Interference in Uplink IFDMA
Akira YAMASAKI, Koichi ADACHI, Masao NAKAGAWA,
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Abstract(in English) Recently, interleaved frequency division multiple access (IFDMA) has been attracting attention as a multiple access scheme in the uplink of the future mobile communication systems. However, since the signal received at the base station is time dispersive due to the asynchronous transmission among the simultaneous access users in the uplink, multi-user interference (MUI) occurs and the bit error rate (BER) performance is severely degraded. In this paper, we derived MUI component theoretically by taking into account of the number of asynchronous interference symbols and the amount of each user's phase rotation, which is IFDMA specific, in the case of frequency non-selective fading. We numerically evaluate the average BER performance in asynchronous uplink IFDMA and compare the results with the computer simulation results.
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Keyword(in English) IFDMA / multi-user interference / performance analysis
Paper # RCS2008-38
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Committee RCS
Conference Date 2008/7/10(1days)
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Registration To Radio Communication Systems (RCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Theoretical Analysis of Multi-User Interference in Uplink IFDMA
Sub Title (in English)
Keyword(1) IFDMA
Keyword(2) multi-user interference
Keyword(3) performance analysis
1st Author's Name Akira YAMASAKI
1st Author's Affiliation School for Open and Environmental Systems, Graduate School of Science and Technology, Keio University()
2nd Author's Name Koichi ADACHI
2nd Author's Affiliation School for Open and Environmental Systems, Graduate School of Science and Technology, Keio University
3rd Author's Name Masao NAKAGAWA
3rd Author's Affiliation School for Open and Environmental Systems, Graduate School of Science and Technology, Keio University
Date 2008-07-17
Paper # RCS2008-38
Volume (vol) vol.108
Number (no) 135
Page pp.pp.-
#Pages 6
Date of Issue