OTFS-Based Multiple-Access in High Doppler and Delay Spread Wireless Channels
We propose a multiple-access (MA) method in the uplink of a orthogonal time frequency space modulation-based wireless communication system where the channel has high Doppler and delay spread. Each user terminal (UT) is allocated delay-Doppler (DD) resource blocks which are spaced at equal intervals...
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| Veröffentlicht in: | IEEE wireless communications letters 2019-04, Vol.8 (2), p.528-531 |
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| container_title | IEEE wireless communications letters |
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| creator | Khammammetti, Venkatesh Mohammed, Saif Khan |
| description | We propose a multiple-access (MA) method in the uplink of a orthogonal time frequency space modulation-based wireless communication system where the channel has high Doppler and delay spread. Each user terminal (UT) is allocated delay-Doppler (DD) resource blocks which are spaced at equal intervals in the DD domain. This limits the corresponding time-frequency (TF) transmit signal to a sub-domain of the entire TF domain. By allocating non-overlapping portions to the TF transmit signal of different UTs, multi-user interference (MUI) is avoided. The proposed MA method is analytically shown to be MUI free and therefore has a significantly higher sum spectral efficiency when compared to other methods proposed in literature which utilize guard bands in the DD domain to reduce MUI. |
| doi_str_mv | 10.1109/LWC.2018.2878740 |
| format | Article |
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The proposed MA method is analytically shown to be MUI free and therefore has a significantly higher sum spectral efficiency when compared to other methods proposed in literature which utilize guard bands in the DD domain to reduce MUI.</description><subject>Communications systems</subject><subject>Delay</subject><subject>delay spread</subject><subject>Delays</subject><subject>Doppler</subject><subject>Doppler shift</subject><subject>multiple-access</subject><subject>OTFS</subject><subject>Time-domain analysis</subject><subject>Time-frequency analysis</subject><subject>Uplink</subject><subject>Wireless communication</subject><subject>Wireless communications</subject><issn>2162-2337</issn><issn>2162-2345</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kM9PwjAUgBujiUS5m3hp4nnY165be8QhYgLhAIZjU9s3GZnbbOHAf-8IhHd5Ly_f-5GPkCdgIwCmX-ebYsQZqBFXucpTdkMGHDKecJHK22st8nsyjHHH-sgYcFADsliup6vkzUb0dHGo91VXYzJ2DmOkVUNn1c-WTtqu7wZqG08nWNsjXXUBraebKmB9IoutbRqs4yO5K20dcXjJD-Rr-r4uZsl8-fFZjOeJ4xr2ifAgmWTe-fzbO6s1Spl5DUJ4qWzKM5c5lFbn4HUJVjueail1Cjkr00yjeCAv571daP8OGPdm1x5C0580nANjgmVc9hQ7Uy60MQYsTReqXxuOBpg5eTO9N3PyZi7e-pHn80iFiFdcyf5fpcQ_9hNmiw</recordid><startdate>20190401</startdate><enddate>20190401</enddate><creator>Khammammetti, Venkatesh</creator><creator>Mohammed, Saif Khan</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Communications systems Delay delay spread Delays Doppler Doppler shift multiple-access OTFS Time-domain analysis Time-frequency analysis Uplink Wireless communication Wireless communications |
| title | OTFS-Based Multiple-Access in High Doppler and Delay Spread Wireless Channels |
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