NDLI: Throughput comparison between VSF-OFCDM and OFDM considering effect of sectorization in forward link broadband packet wireless access

Content Provider	IEEE Xplore Digital Library
Author	Maeda, N. Atarashi, H. Abeta, S. Sawahashi, M.
Copyright Year	2002
Description	Author affiliation: Wireless Labs., NTT DoCoMo Inc., Kanagawa, Japan (Maeda, N.; Atarashi, H.; Abeta, S.; Sawahashi, M.)
Abstract	This paper compares the forward link radio link capacity between variable spreading factor-orthogonal frequency and code division multiplexing (VSF-OFCDM) with one-cell frequency reuse and orthogonal frequency division multiplexing (OFDM) with conventional three-cell frequency reuse or with one-cell frequency reuse utilizing symbol repetition, considering the effect of sectorization and the adaptive modulation and channel coding (AMC) scheme in a multi-cell environment in a broadband multipath fading channel. Simulation results demonstrate that, although the achievable radio link capacity in VSF-OFCDM is approximately 1.5 fold greater compared to that in OFDM with three-cell frequency reuse, almost identical radio link capacity under full channel-load conditions is realized in VSF-OFCDM and OFDM with one-cell frequency reuse applying elaborate symbol repetition transmission to suppress other-cell interference. Meanwhile, to achieve a lower data rate channel than the peak rate, higher-quality transmission is possible in VSF-OFCDM employing two-dimensional spreading compared to OFDM, by utilizing the frequency diversity effect in frequency domain spreading. Consequently, we conclude that VSF-OFCDM is superior to OFDM in broadband wireless access, since the former provides higher-quality transmission and more flexible accommodation of the lower data rate channels, along with the flexibility in designing essential channels such as the control and pilot channels.
Starting Page	47
Ending Page	51
File Size	371682
Page Count	5
File Format	PDF
ISBN	0780374673
ISSN	10903038
DOI	10.1109/VETECF.2002.1040299
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-09-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Throughput Radio link Code division multiplexing Modulation coding OFDM modulation Channel coding Fading Channel capacity Interference suppression Radiofrequency interference
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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