Espectro ensanchado
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Universidad Distrital Francisco José de Caldas
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Este artículo muestra las técnicas de espectro ensanchado SS (del Inglés Spread Spectrum ) que permite el uso simultáneo de una banda amplia de frecuencias por parte de muchos usuarios mediante técnicas de acceso múltiple por división de código CDMA (del Inglés Code Division Multiple Access), para aumentar en gran proporción su capacidad en relación con las técnicas convencionales de acceso múltiple.
The manufacturers of wireless communications equipment continuously look for new techniques to increase the capacity of the channels, that every day are more congested by the great demand of new users. One of the fields that are investigated more are the techniques of multiple access, where many users share a frequency band because a bandwidth does not exist to assign a permanent frequency channel to each user. This article shows the techniques of widened Phantom SS (of the English Spread Spectrum) that allows the simultaneous use of an ample band of frequencies by many users by means of techniques of multiple access by division of code CDMA (of the English Code Multiple Division Access), to increase in great proportion its capacity in relation to the conventional techniques of multiple access.
The manufacturers of wireless communications equipment continuously look for new techniques to increase the capacity of the channels, that every day are more congested by the great demand of new users. One of the fields that are investigated more are the techniques of multiple access, where many users share a frequency band because a bandwidth does not exist to assign a permanent frequency channel to each user. This article shows the techniques of widened Phantom SS (of the English Spread Spectrum) that allows the simultaneous use of an ample band of frequencies by many users by means of techniques of multiple access by division of code CDMA (of the English Code Multiple Division Access), to increase in great proportion its capacity in relation to the conventional techniques of multiple access.
Palabras clave
Spread Spectrum, wireless communications, CDMA, direct sequence, frecuency hopping, chip, PCS, celular telephone., Espectro Ensanchado, comunicaciones inalámbricas, CDMA, secuencia directa, saltos de frecuencia, chip, PCS, Telefonía Celular.