Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System
In broadband wireless Orthogonal Frequency Division Multiple Access (OFDMA) systems where a set of subcarriers are shared among multiple users, the overall system throughput can be improved by a band-AMC mode that assigns each suband, a set of contiguous subcarriers within a coherence bandwidth, to...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2009-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Online Access: | http://dx.doi.org/10.1155/2009/147231 |
| _version_ | 1818515651444080640 |
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| author | Sung K. Kim Chung G. Kang |
| author_facet | Sung K. Kim Chung G. Kang |
| author_sort | Sung K. Kim |
| collection | DOAJ |
| description | In broadband wireless Orthogonal Frequency Division Multiple Access (OFDMA) systems where a set of subcarriers are shared among multiple users, the overall system throughput can be improved by a band-AMC mode that assigns each suband, a set of contiguous subcarriers within a coherence bandwidth, to individual user with the better channel quality. As long as channel qualities for the subbands of all users are known a priori, multiuser and multiband gains can be simultaneously achieved with opportunistic scheduling. This paper presents an analytical means of evaluating the maximum system throughput for a bandadaptive modulation and coding (AMC) mode under the various system parameters. In particular, the practical features of resource management for OFDMA system are carefully modeled within the current analytical framework. Our numerical results demonstrate that band-AMC mode outperforms the diversity mode only by providing the channel qualities for a subset of good subbands, confirming the multiuser and multiband diversity gain that can be achieved by the band-AMC mode. |
| first_indexed | 2024-12-11T00:31:34Z |
| format | Article |
| id | doaj.art-86dd9545107347f5b7f0a56edc7323a8 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-11T00:31:34Z |
| publishDate | 2009-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-86dd9545107347f5b7f0a56edc7323a82022-12-22T01:27:20ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992009-01-01200910.1155/2009/147231Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA SystemSung K. KimChung G. KangIn broadband wireless Orthogonal Frequency Division Multiple Access (OFDMA) systems where a set of subcarriers are shared among multiple users, the overall system throughput can be improved by a band-AMC mode that assigns each suband, a set of contiguous subcarriers within a coherence bandwidth, to individual user with the better channel quality. As long as channel qualities for the subbands of all users are known a priori, multiuser and multiband gains can be simultaneously achieved with opportunistic scheduling. This paper presents an analytical means of evaluating the maximum system throughput for a bandadaptive modulation and coding (AMC) mode under the various system parameters. In particular, the practical features of resource management for OFDMA system are carefully modeled within the current analytical framework. Our numerical results demonstrate that band-AMC mode outperforms the diversity mode only by providing the channel qualities for a subset of good subbands, confirming the multiuser and multiband diversity gain that can be achieved by the band-AMC mode.http://dx.doi.org/10.1155/2009/147231 |
| spellingShingle | Sung K. Kim Chung G. Kang Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System EURASIP Journal on Wireless Communications and Networking |
| title | Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System |
| title_full | Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System |
| title_fullStr | Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System |
| title_full_unstemmed | Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System |
| title_short | Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System |
| title_sort | throughput analysis of band amc scheme in broadband wireless ofdma system |
| url | http://dx.doi.org/10.1155/2009/147231 |
| work_keys_str_mv | AT sungkkim throughputanalysisofbandamcschemeinbroadbandwirelessofdmasystem AT chunggkang throughputanalysisofbandamcschemeinbroadbandwirelessofdmasystem |