{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,6,11]],"date-time":"2023-06-11T11:26:44Z","timestamp":1686482804758},"reference-count":4,"publisher":"Hindawi Limited","license":[{"start":{"date-parts":[[2009,1,1]],"date-time":"2009-01-01T00:00:00Z","timestamp":1230768000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["International Journal of Digital Multimedia Broadcasting"],"published-print":{"date-parts":[[2009]]},"abstract":"<jats:p>We investigate the use of application layer FEC protection in DVB-T (Digital Video Broadcasting-Terrestrial) networks for the provision of mobile services. Mobile reception is characterized by variations of the received signal caused by fast fading and shadowing. DVB-T was originally designed for fixed and portable reception, and generally does not provide enough quality in mobile environments. The link layer protection mechanism MPE-FEC (Multi Protocol Encapsulation-Forward Error Correction) was standardized in DVB-H (Digital Video Broadcasting-Handheld) for the protection of mobile TV services. Although DVB-T itself does not incorporate any link or application layer protection mechanism, AL-FEC (Application layer Forward Error Correction) protection can be introduced in DVB-T in a backwards compatible way. By means of AL-FEC, it is possible to improve the robustness of DVB-T services for the provision of mobile TV. In this paper, we explain the concept of AL-FEC protection in DVB-T and evaluate its performance by means of laboratory measurements and dynamic simulations with shadowing. We study different configurations of AL-FEC and compare its performance with MPE-FEC. In this paper, we discuss some implementation aspects of AL-FEC in real scenarios and propose an implementation based on Raptor codes and hash sequences. We also present results obtained by a first AL-FEC prototype for DVB-T that demonstrates the feasibility of the approach.<\/jats:p>","DOI":"10.1155\/2009\/614178","type":"journal-article","created":{"date-parts":[[2009,10,18]],"date-time":"2009-10-18T10:30:05Z","timestamp":1255861805000},"page":"1-10","source":"Crossref","is-referenced-by-count":5,"title":["AL-FEC for Improved Mobile Reception of MPEG-2 DVB-T Transport Streams"],"prefix":"10.1155","volume":"2009","author":[{"given":"David","family":"Goz\u00e1lvez","sequence":"first","affiliation":[{"name":"Universidad Polit\u00e9cnica de Valencia (UPV), Mobile Communications Group, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"G\u00f3mez-Barquero","sequence":"additional","affiliation":[{"name":"Universidad Polit\u00e9cnica de Valencia (UPV), Mobile Communications Group, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Stockhammer","sequence":"additional","affiliation":[{"name":"QUALCOMM Incorporated, Santa Clara, CA 95051, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Luby","sequence":"additional","affiliation":[{"name":"QUALCOMM Incorporated, Santa Clara, CA 95051, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"98","reference":[{"key":"2","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2005.861011"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1109\/TBC.2008.2012024"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.2006.874390"},{"key":"7","year":"2000"}],"container-title":["International Journal of Digital Multimedia Broadcasting"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijdmb\/2009\/614178.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijdmb\/2009\/614178.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijdmb\/2009\/614178.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,1,18]],"date-time":"2017-01-18T16:06:47Z","timestamp":1484755607000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/ijdmb\/2009\/614178\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009]]},"references-count":4,"alternative-id":["614178","614178"],"URL":"https:\/\/doi.org\/10.1155\/2009\/614178","relation":{},"ISSN":["1687-7578","1687-7586"],"issn-type":[{"value":"1687-7578","type":"print"},{"value":"1687-7586","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009]]}}}