Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers
<p>Abstract</p> <p>In this article, design of preamble for channel estimation and pilot symbols for pilot-assisted channel estimation in orthogonal frequency division multiplexing system with null subcarriers is studied. Both the preambles and pilot symbols are designed to minimize...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2011-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Subjects: | |
| Online Access: | http://jwcn.eurasipjournals.com/content/2011/1/2 |
| _version_ | 1830360195561160704 |
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| author | Ohno Shuichi Manasseh Emmanuel Nakamoto Masayoshi |
| author_facet | Ohno Shuichi Manasseh Emmanuel Nakamoto Masayoshi |
| author_sort | Ohno Shuichi |
| collection | DOAJ |
| description | <p>Abstract</p> <p>In this article, design of preamble for channel estimation and pilot symbols for pilot-assisted channel estimation in orthogonal frequency division multiplexing system with null subcarriers is studied. Both the preambles and pilot symbols are designed to minimize the <it>l</it> <sub>2 </sub>or the <it>l</it> <sub>∞ </sub>norm of the channel estimate mean-squared errors (MSE) in frequency-selective environments. We use convex optimization technique to find optimal power distribution to the preamble by casting the MSE minimization problem into a semidefinite programming problem. Then, using the designed optimal preamble as an initial value, we iteratively select the placement and optimally distribute power to the selected pilot symbols. Design examples consistent with IEEE 802.11a as well as IEEE 802.16e are provided to illustrate the superior performance of our proposed method over the equi-spaced equi-powered pilot symbols and the partially equi-spaced pilot symbols.</p> |
| first_indexed | 2024-12-20T03:12:51Z |
| format | Article |
| id | doaj.art-05fd826cdb904ac7aaecd9047c68b37c |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-20T03:12:51Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-05fd826cdb904ac7aaecd9047c68b37c2022-12-21T19:55:25ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992011-01-01201112Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriersOhno ShuichiManasseh EmmanuelNakamoto Masayoshi<p>Abstract</p> <p>In this article, design of preamble for channel estimation and pilot symbols for pilot-assisted channel estimation in orthogonal frequency division multiplexing system with null subcarriers is studied. Both the preambles and pilot symbols are designed to minimize the <it>l</it> <sub>2 </sub>or the <it>l</it> <sub>∞ </sub>norm of the channel estimate mean-squared errors (MSE) in frequency-selective environments. We use convex optimization technique to find optimal power distribution to the preamble by casting the MSE minimization problem into a semidefinite programming problem. Then, using the designed optimal preamble as an initial value, we iteratively select the placement and optimally distribute power to the selected pilot symbols. Design examples consistent with IEEE 802.11a as well as IEEE 802.16e are provided to illustrate the superior performance of our proposed method over the equi-spaced equi-powered pilot symbols and the partially equi-spaced pilot symbols.</p>http://jwcn.eurasipjournals.com/content/2011/1/2Orthogonal frequency division multiplexing (OFDM)Channel estimationSemidefinite programming (SDP)Convex optimizationPilot symbolsPilot design |
| spellingShingle | Ohno Shuichi Manasseh Emmanuel Nakamoto Masayoshi Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers EURASIP Journal on Wireless Communications and Networking Orthogonal frequency division multiplexing (OFDM) Channel estimation Semidefinite programming (SDP) Convex optimization Pilot symbols Pilot design |
| title | Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers |
| title_full | Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers |
| title_fullStr | Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers |
| title_full_unstemmed | Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers |
| title_short | Preamble and pilot symbol design for channel estimation in OFDM systems with null subcarriers |
| title_sort | preamble and pilot symbol design for channel estimation in ofdm systems with null subcarriers |
| topic | Orthogonal frequency division multiplexing (OFDM) Channel estimation Semidefinite programming (SDP) Convex optimization Pilot symbols Pilot design |
| url | http://jwcn.eurasipjournals.com/content/2011/1/2 |
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