Adaptive equalization at Hsdpa symbol level
MACOM 2009, 2nd International Workshop on Multiple Access Communications, co-located with the IEEE International Conference on Communications, ICC-2009, 14 June 2009, Dresden, Germany
Although a simple solution, pilot-symbols-trained LMS algorithm is not capable of tracking fast varying channels in UMTS FDD downlink due to insufficient adaptation rate. Pilot-chips-trained LMS adaptation is on the other hand much more prone to noise. These two phenomena manifest themselves in the two components of the adaptation excess mean square (EMSE). A compromise can be found by considering HSDPA symbol-level Griffiths or decisiondirected equalization. These two methods enable adapting 16 times more frequently than the pilot-symbols-aided adaptation. They are also attractive for implementation since a modular approach can be adopted by exploiting either one or more of the available HSDPA code domains depending on the instantaneous channel quality and the performance requirements.
| Type: | Conference |
| Language: | English |
| City: | Dresden |
| Country: | GERMANY |
| Date: | June 2009 |
| Department: | Mobile Communications |
| Eurecom ref: | 2768 |
| Copyright: | © 2009 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. |
| Bibtex: | @inproceedings{EURECOM+2768, doi = { http://dx.doi.org/10.1109/ICCW.2009.5208106}, year = {2009}, title = {{A}daptive equalization at {H}sdpa symbol level }, author = {{B}astug, {A}hmet and {A}ncora, {A}ndrea and {S}lock, {D}irk {T} {M}}, booktitle = {{MACOM} 2009, 2nd {I}nternational {W}orkshop on {M}ultiple {A}ccess {C}ommunications, co-located with the {IEEE} {I}nternational {C}onference on {C}ommunications, {ICC}-2009, 14 {J}une 2009, {D}resden, {G}ermany}, address = {{D}resden, {GERMANY}}, month = {06}, url = {http://www.eurecom.fr/publication/2768} } |
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