Tracking of fast-fading channels in long-code CDMA
A new technique for blind tracking of fast-fading channels in long-code code division multiple access (CDMA) is proposed by exploiting multipath diversity. Based on a linear interpolation channel model, the proposed method blindly identifies a time-varying channel at arbitrary estimating points with...
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| Veröffentlicht in: | IEEE transactions on signal processing 2004-03, Vol.52 (3), p.786-795 |
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| container_title | IEEE transactions on signal processing |
| container_volume | 52 |
| creator | Sung, Y. Tong, L. |
| description | A new technique for blind tracking of fast-fading channels in long-code code division multiple access (CDMA) is proposed by exploiting multipath diversity. Based on a linear interpolation channel model, the proposed method blindly identifies a time-varying channel at arbitrary estimating points within a block up to a scale factor and increases bandwidth efficiency allowing only one pilot symbol within a block, which is much larger than channel coherence time. The proposed method can be implemented using an efficient state-space inversion technique for multiuser cases. The mean square error (MSE) performance of the proposed estimator is compared with the Cramer-Rao bound (CRB) for interpolated channel. Modeling error and bit error rate (BER) are also evaluated using Monte-Carlo simulations and compared with the block fading model and a decision-directed tracking technique. |
| doi_str_mv | 10.1109/TSP.2003.822362 |
| format | Article |
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Modeling error and bit error rate (BER) are also evaluated using Monte-Carlo simulations and compared with the block fading model and a decision-directed tracking technique.</description><subject>Applied sciences</subject><subject>Bandwidth</subject><subject>Bit error rate</subject><subject>Channel estimation</subject><subject>Code division multiplexing</subject><subject>Coherence</subject><subject>Detection, estimation, filtering, equalization, prediction</subject><subject>Exact sciences and technology</subject><subject>Fading</subject><subject>Information, signal and communications theory</subject><subject>Interpolation</subject><subject>Multiaccess communication</subject><subject>Peak to average power ratio</subject><subject>Signal and communications theory</subject><subject>Signal, noise</subject><subject>Telecommunications and information theory</subject><subject>Time-varying channels</subject><issn>1053-587X</issn><issn>1941-0476</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkE1LAzEQhoMoWKtnD14WQW_b5nOTHEv9hIqCFbyFaXZSt253a9Ie_PduaaHgaWaY5x2Gh5BLRgeMUTucvr8NOKViYDgXBT8iPWYly6nUxXHXUyVyZfTnKTlLaUEpk9IWPcKnEfx31cyzNmQB0joPUG5H_wVNg3XKqiar22ae-7bEbHz3MjonJwHqhBf72icfD_fT8VM-eX18Ho8muRfGrHNlJc4sBZC-DIJRKNVsJpTHwkLA4KVElJwjlkIXVkMAT1UpAkoqpaJa9Mnt7u4qtj8bTGu3rJLHuoYG201y3GjOrTYdeP0PXLSb2HS_OWNEwaxWqoOGO8jHNqWIwa1itYT46xh1W4GuE-i2At1OYJe42Z-F5KEOERpfpUNMKSa1YR13teMqRDyseWGEpuIPsbh3cQ</recordid><startdate>20040301</startdate><enddate>20040301</enddate><creator>Sung, Y.</creator><creator>Tong, L.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Bandwidth Bit error rate Channel estimation Code division multiplexing Coherence Detection, estimation, filtering, equalization, prediction Exact sciences and technology Fading Information, signal and communications theory Interpolation Multiaccess communication Peak to average power ratio Signal and communications theory Signal, noise Telecommunications and information theory Time-varying channels |
| title | Tracking of fast-fading channels in long-code CDMA |
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