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- Publisher Website: 10.1109/APCCAS.2008.4746149
- Scopus: eid_2-s2.0-62949144798
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Conference Paper: Optimal power allocation for channel estimation in MIMO-OFCDM systems
| Title | Optimal power allocation for channel estimation in MIMO-OFCDM systems |
|---|---|
| Authors | |
| Issue Date | 2008 |
| Publisher | IEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000091 |
| Citation | The IEEE Asia-Pacific Conference on Circuits and Systems (APCCAS 2008), Macao, China, 30 November-3 December 2008. In Proceedings of IEEE APCCAS, 2008, p. 822-825 How to Cite? |
| Abstract | This paper investigates the power allocation in orthogonal frequency and code division multiplexing (OFCDM) systems with multiple input multiple output (MEMO) multiplexing (MIMO-OFCDM). Since time-multiplexed pilot channels are employed for channel estimation, the total transmission power should be properly assigned to the pilot and data channels to achieve the best performance. By minimizing the mean square error (MSE) during signal detection, a closed form expression is derived for the optimal power ratio between the pilot and data channels. It is shown that the optimal power ratio is mainly decided by the number of transmit antennas and the number of pilot and data symbols in a packet, while it is not sensitive to other system parameters like signal-to-noise ratio (SNR) and the frequency domain spreading factor. Simulations demonstrate the accuracy of the derived optimal power ratio. © 2008 IEEE. |
| Persistent Identifier | http://hdl.handle.net/10722/158576 |
| References |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Zhou, Y | en_US |
| dc.contributor.author | Ng, TS | en_US |
| dc.date.accessioned | 2012-08-08T09:00:19Z | - |
| dc.date.available | 2012-08-08T09:00:19Z | - |
| dc.date.issued | 2008 | en_US |
| dc.identifier.citation | The IEEE Asia-Pacific Conference on Circuits and Systems (APCCAS 2008), Macao, China, 30 November-3 December 2008. In Proceedings of IEEE APCCAS, 2008, p. 822-825 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10722/158576 | - |
| dc.description.abstract | This paper investigates the power allocation in orthogonal frequency and code division multiplexing (OFCDM) systems with multiple input multiple output (MEMO) multiplexing (MIMO-OFCDM). Since time-multiplexed pilot channels are employed for channel estimation, the total transmission power should be properly assigned to the pilot and data channels to achieve the best performance. By minimizing the mean square error (MSE) during signal detection, a closed form expression is derived for the optimal power ratio between the pilot and data channels. It is shown that the optimal power ratio is mainly decided by the number of transmit antennas and the number of pilot and data symbols in a packet, while it is not sensitive to other system parameters like signal-to-noise ratio (SNR) and the frequency domain spreading factor. Simulations demonstrate the accuracy of the derived optimal power ratio. © 2008 IEEE. | en_US |
| dc.language | eng | en_US |
| dc.publisher | IEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000091 | - |
| dc.relation.ispartof | IEEE Asia-Pacific Conference on Circuits and Systems Proceedings | en_US |
| dc.rights | ©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. | - |
| dc.title | Optimal power allocation for channel estimation in MIMO-OFCDM systems | en_US |
| dc.type | Conference_Paper | en_US |
| dc.identifier.email | Zhou, Y:yqzhou@eee.hku.hk | en_US |
| dc.identifier.email | Ng, TS:tsng@eee.hku.hk | en_US |
| dc.identifier.authority | Zhou, Y=rp00214 | en_US |
| dc.identifier.authority | Ng, TS=rp00159 | en_US |
| dc.description.nature | published_or_final_version | en_US |
| dc.identifier.doi | 10.1109/APCCAS.2008.4746149 | en_US |
| dc.identifier.scopus | eid_2-s2.0-62949144798 | en_US |
| dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-62949144798&selection=ref&src=s&origin=recordpage | en_US |
| dc.identifier.spage | 822 | en_US |
| dc.identifier.epage | 825 | en_US |
| dc.identifier.scopusauthorid | Zhou, Y=7405367062 | en_US |
| dc.identifier.scopusauthorid | Ng, TS=7402229975 | en_US |