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Si consideramos un móvil de este sistema LTE en movimiento, y sabiendo que el planificador de LTE necesita que las condiciones de propagación del canal no cambien más rápido que el tiempo de duración de un Resource Block, ¿Cuál es la máxima velocidad de un móvil para que el planificador de LTE funcione correctamente y no se vea perjudicado por la frecuencia doppler del desplazamiento del móvil?

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El número máximo de usuarios simultáneos de una célula del sistema LTE es:

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El número de Resource Blocks (RB) del sistema es:

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Un sistema celular LTE ocupa un ancho de banda de 9MHz útiles entorno a una frecuencia portadora de 3250MHz. En este sistema nos encontramos dos usuarios que utilizan una conexión que en el downlink tiene las siguientes características:

Usuario 1:

• Mod: QPSK

• Tasa de codificación de canal: 0,3

• Num. RB asignados durante la conexión: 3

• Utiliza 3 × 3 diversity MIMO 

Usuario 2:

• Mod: 64 QAM

• Tasa de codificación de canal: 0,65

• Num. RB en media asignados durante la conexión: 8

• Utiliza 3 × 3 single user MIMO

El número de subportadoras del sistema es:

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Read the text and decide whether the following statement is true or false.

        Knowledge of a foreign language

is essential for a specialist with a university degree. So the curriculum in

engineering includes a foreign language as an obligatory subject to be taken by

every student. And the would-be highly qualified specialists are glad to be

given an opportunity to improve their knowledge of a foreign language or to

take a second foreign language. Some undergraduates are likely to be learning

two foreign languages simultaneously. English is the most popular with students

of all specialities. The course aims to develop all four skills through a

series of tasks and activities that encourage students to combine their

knowledge of English with their technical knowledge.

  • Knowledge of a foreign language is inessential for a

    specialist.

 

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Fill in the gap with the correct word.

The company

will have ______ a new trading centre next year.

           

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Fill in the gap with the correct word.

The

penetrating power of this new radiation was an obvious point ______ .

           

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Fill in the gap with the correct word.

It is

important for the model ______ accurate but simple enough.

           

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Read the text and decide whether the statement is true or false.

         Knowledge of a foreign language

is essential for a specialist with a university degree. So the curriculum in

engineering includes a foreign language as an obligatory subject to be taken by

every student. And the would-be highly qualified specialists are glad to be

given an opportunity to improve their knowledge of a foreign language or to

take a second foreign language. Some undergraduates are likely to be learning

two foreign languages simultaneously. English is the most popular with students

of all specialities. The course aims to develop all four skills through a

series of tasks and activities that encourage students to combine their

knowledge of English with their technical knowledge.   

  • The curriculum in engineering does not include a

    foreign language.

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 Read the text and decide whether the statement is true or false.

        Knowledge of a foreign language

is essential for a specialist with a university degree. So the curriculum in

engineering includes a foreign language as an obligatory subject to be taken by

every student. And the would-be highly qualified specialists are glad to be

given an opportunity to improve their knowledge of a foreign language or to

take a second foreign language. Some undergraduates are likely to be learning

two foreign languages simultaneously. English is the most popular with students

of all specialities. The course aims to develop all four skills through a

series of tasks and activities that encourage students to combine their

knowledge of English with their technical knowledge.

  • The students take advantage of the opportunity to

    improve their knowledge of a foreign language

    .

 

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