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Radio-frequency transceiver and radio-frequency transceiving method

A technology of radio frequency transceiver and radio frequency transmission, applied in wireless communication, space transmit diversity, electrical components, etc.

Active Publication Date: 2014-07-09
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a radio frequency transceiver and a corresponding radio frequency transceiving method to solve the problem of realizing the transceiving of MIMO and multi-carrier radio frequency signals

Method used

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  • Radio-frequency transceiver and radio-frequency transceiving method
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  • Radio-frequency transceiver and radio-frequency transceiving method

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specific Embodiment 1

[0053] This embodiment is a preferred implementation of the radio frequency transceiver of the present invention; the overall structure is as follows figure 1 shown, including:

[0054] N radio frequency receiving channels, Rx_RF1~Rx_RFN; M radio frequency transmitting channels Tx_RF1~Tx_RFM;

[0055] Rx_RFn is connected to the radio frequency front end, and receives the downlink radio frequency signal from the radio frequency front end;

[0056] Tx_RFm is connected to the radio frequency front end, and transmits an uplink radio frequency signal to the radio frequency front end;

[0057] Among them, n is the serial number of the radio frequency receiving channel, n=1, 2,..., N; m is the serial number of the radio frequency transmitting channel, m=1, 2,..., M;

[0058] Among them, N and M can be set according to the actual needs of the terminal:

[0059] If the terminal needs to be able to support the maximum number of carriers and the maximum number of MIMO radios to transm...

specific Embodiment 2

[0073] This embodiment is a preferred implementation of the receiving data interface module of the specific embodiment 1 radio frequency transceiver, and the receiving data interface module includes:

[0074] N analog-to-digital converters ADC1-ADCN;

[0075] The first selector; the first selector is preferably a multi-input single-output multiplexer with N-way input and single-way output, and the number of digits of each input and the number of outputs are not greater than the number of digits of ADCn;

[0076] The input terminal of ADCn is connected to Rx_RFn, the output terminal of ADCn is connected to the input terminal n of the first selector; the output terminal of the first selector is connected to the baseband chip;

[0077] The ADCn performs analog-to-digital conversion on the downlink analog signal output by Rx_RFn to generate a downlink digital signal; the first selector strobes each ADCn in turn, and sends the downlink digital signal output by the gated ADCn to the...

specific Embodiment 3

[0091] This embodiment is a preferred implementation of the transmission data interface module of the radio frequency transceiver of specific embodiment 1, and the transmission data interface module includes:

[0092] M digital-to-analog converters DAC1-DACM;

[0093] The third selector; the third selector is preferably a single-input multiple-output multiplexer with single-way input and M-way output, and the number of bits output by each way and the number of bits input are not less than the number of bits of DACm;

[0094] The input end of DACm is connected to Tx_RFm, the input end of DACm is connected to the output end m of the third selector; the input end of the third selector is connected to the baseband chip;

[0095] The third selector selects each DACm sequentially, and the selected DACm performs digital-to-analog conversion on the uplink digital signal output from the baseband to generate an uplink analog signal and send it to Tx_RFm.

[0096] In this example,

[0...

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Abstract

The invention discloses a radio-frequency transceiver which includes at least two radio-frequency receiving channels, at least two radio-frequency transmitting channels, a radio-frequency frequency-synthesizing module, a radio-frequency local-oscillator selection switch, a clock module, a receiving data interface module, a transmitting data interface module, a control interface module, a radio-frequency frequency-synthesizing module, and a radio-frequency local-oscillator selection switch. The radio-frequency frequency-synthesizing module generates a radio-frequency local-oscillator signal of each carrier according to baseband control information received by the control interface module. The radio-frequency local-oscillator selection switch is connected with each radio-frequency receiving channel, each radio-frequency transmitting channel and the radio-frequency frequency-synthesizing module and selects a radio-frequency local-oscillator signal for each radio-frequency receiving channel or each radio-frequency transmitting channel according to the baseband control information received by the control interface module. The invention also discloses a corresponding radio-frequency transceiving method. The technical scheme is capable of realizing a terminal MIMO and multi-carrier radio-frequency transceiving process.

Description

technical field [0001] The present invention relates to mobile terminal (referred to as UE) radio frequency control technology, and in particular to an enhanced long-term evolution technology (referred to as LTE-A) UE radio frequency transceiver and a radio frequency transceiver method of the radio frequency transceiver. Background technique [0002] LTE-A is a further evolution technology of the long-term evolution technology (LTE for short). According to the regulations of the Third Generation Partnership (3GPP for short), LTE-A needs to support the peak rate of uplink 500Mbps and downlink 1Gbps. Therefore, LTE-A introduces carrier aggregation technology on the basis of LTE technology. Correspondingly, the LTE-A radio frequency signal device is also required to be able to simultaneously support up to 8 channels of downlink and 4 channels of uplink multiple-input multiple-output (MIMO for short) and the processing of multi-carrier radio frequency signals of up to 5 carriers...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04W88/02
Inventor 张国会毛翔宇吴付利
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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