{"id":945,"date":"2012-11-18T18:51:54","date_gmt":"2012-11-18T20:51:54","guid":{"rendered":"http:\/\/efagundes.com\/openclass_networking\/?page_id=945"},"modified":"2022-01-16T17:51:05","modified_gmt":"2022-01-16T20:51:05","slug":"modulacao-codificada-por-trelicas","status":"publish","type":"page","link":"https:\/\/efagundes.com\/networking\/sistema-telefonico\/modulacao-codificada-por-trelicas\/","title":{"rendered":"Modula\u00e7\u00e3o codificada por treli\u00e7as"},"content":{"rendered":"

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":394,"menu_order":13,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-945","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P8yKGp-ff","jetpack-related-posts":[{"id":426,"url":"https:\/\/efagundes.com\/networking\/sistema-telefonico\/tipos-de-modulacao-v\/","url_meta":{"origin":945,"position":0},"title":"Tipos de modula\u00e7\u00e3o (V)","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"\u00a0 Com muitos pontos no padr\u00e3o de constela\u00e7\u00e3o, at\u00e9 mesmo uma pequena quantidade de ru\u00eddo na amplitude ou fase detectada pode resultar em um erro e, potencialmente, em muitos bits incorretos. Para reduzir a chance de ocorr\u00eancia de erros s\u00e3o adicionados bits extras a cada amostra. Os esquemas s\u00e3o conhecidos\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide16","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide163.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide163.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide163.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide163.jpg?resize=700%2C400 2x"},"classes":[]},{"id":424,"url":"https:\/\/efagundes.com\/networking\/sistema-telefonico\/tipos-de-modulacao-iv\/","url_meta":{"origin":945,"position":1},"title":"Tipos de modula\u00e7\u00e3o (IV)","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"\u00a0 Todos os modems avan\u00e7ados utilizam uma combina\u00e7\u00e3o de t\u00e9cnicas de modula\u00e7\u00e3o para transmitir v\u00e1rios bits por baud. Com freq\u00fc\u00eancia, v\u00e1rias amplitudes e v\u00e1rios deslocamento de fase s\u00e3o combinados para transmitir diversos bits\/s\u00edmbolos. A figura (a) mostra os pontos 45, 135, 225 e 315 graus com amplitude constante (dist\u00e2ncia a\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide15","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide153.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide153.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide153.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide153.jpg?resize=700%2C400 2x"},"classes":[]},{"id":418,"url":"https:\/\/efagundes.com\/networking\/sistema-telefonico\/tipos-de-modulacao-i\/","url_meta":{"origin":945,"position":2},"title":"Tipos de modula\u00e7\u00e3o (I)","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"\u00a0 Para facilitar a transmiss\u00e3o do sinal atrav\u00e9s dos meios f\u00edsicos e adequar as frequ\u00eancias aos sistemas de comunica\u00e7\u00e3o se utiliza o que chamamos de onda portadora, sobre a qual \u00e9 transmitido o sinal com a informa\u00e7\u00e3o. A onda portadora \u00e9 um sinal senoidal caracterizado por tr\u00eas vari\u00e1veis: amplitude, freq\u00fc\u00eancia\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide12","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide124.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide124.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide124.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide124.jpg?resize=700%2C400 2x"},"classes":[]},{"id":414,"url":"https:\/\/efagundes.com\/networking\/sistema-telefonico\/modulacao-digital\/","url_meta":{"origin":945,"position":3},"title":"Modula\u00e7\u00e3o digital","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"O sinal (bit) pode ser enviado basicamente de duas formas: digital e anal\u00f3gica. Para cada caso existem t\u00e9cnicas particulares a serem empregadas. A modula\u00e7\u00e3o constitui-se na t\u00e9cnica empregada para modificar um sinal com a finalidade de transportar uma informa\u00e7\u00e3o atrav\u00e9s do canal de comunica\u00e7\u00e3o e recuperar o sinal, na sua\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide11","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide117.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide117.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide117.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide117.jpg?resize=700%2C400 2x"},"classes":[]},{"id":422,"url":"https:\/\/efagundes.com\/networking\/sistema-telefonico\/tipos-de-modulacao-iii\/","url_meta":{"origin":945,"position":4},"title":"Tipos de modula\u00e7\u00e3o (III)","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"Os conceitos de largura de banda, baud, s\u00edmbolo e taxa de bits costuma ser confundidos: Largura de banda de um meio \u00e9 a faixa de freq\u00fc\u00eancias que passam por ele com atenua\u00e7\u00e3o m\u00ednima. \u00c9 uma propriedade f\u00edsica do meio (normalmente, variando de 0 at\u00e9 alguma freq\u00fc\u00eancia m\u00e1xima definida pelo meio)\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide14","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide144.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide144.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide144.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide144.jpg?resize=700%2C400 2x"},"classes":[]},{"id":454,"url":"https:\/\/efagundes.com\/networking\/sistema-de-telefonia-movel\/edge\/","url_meta":{"origin":945,"position":5},"title":"EDGE","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"O EDGE est\u00e1 relacionado ao aumento da capacidade de transmiss\u00e3o da interface a\u00e9rea no corrente padr\u00e3o GSM. A principal ideia \u00e9 adicionar novas caracter\u00edsticas na rede GSM mantendo compatibilidade com os telefones celulares GSM \/GPRS e com os equipamentos da rede (BSS, BSC, TRAU, MSC, SGSN e GGSN). Todos os\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide302.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide302.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide302.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide302.jpg?resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/pages\/945","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/comments?post=945"}],"version-history":[{"count":0,"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/pages\/945\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/pages\/394"}],"wp:attachment":[{"href":"https:\/\/efagundes.com\/networking\/wp-json\/wp\/v2\/media?parent=945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}