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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Junwoo Jung Hyungwon Park Jaesung Lim Soonchul Park |
| Copyright Year | 2008 |
| Description | Author affiliation: Grad. Sch. of Inf. & Commun., Ajou Univ., Suwon (Junwoo Jung; Hyungwon Park; Jaesung Lim) |
| Abstract | Orthogonal Frequency Division Multiple Access (OFDMA) is a promising technique which can provide high capacity in the wireless environments. Also cooperative communications are effectively used to achieve cooperative diversity for high reliability. In this paper, we propose the pair-based OFDMA frame structure in which cooperative users transmit their blocks in turns for achieving cooperative diversity in OFDMA systems. In order to guarantee the fairness of users we also propose a dynamic resource allocation scheme based on cooperative communications. Through the proposed scheme, user fairness can be achieved by sharing the remained capacity of users near the base station (BS) with users who are farther from the base station. For this purpose, the center-located users select their partner whose channel suffers the lowest SNR to BS among their neighbor set. Based on the partner selection results, subchannels are assigned to cooperative and non-cooperative users. Through simulations in the IEEE 802.16e system environments, it is shown that the proposed scheme outperforms the non-cooperation based scheme in terms of user fairness. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 199952 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424417216 |
| ISSN | 10903038 |
| DOI | 10.1109/VETECF.2008.356 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-09-21 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Signal to noise ratio Resource management Bandwidth Throughput Distance measurement Dynamic scheduling Wireless communication |
| Content Type | Text |
| Resource Type | Article |
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