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Device and method for calibrating output data of MMSE receiver

A technology for outputting data and receiving data, which is applied in the field of devices for calibrating the output data amplitude of MMSE receivers, can solve problems such as errors and performance degradation, and achieve the effects of small amount of calculation, simple implementation, and improved measurement accuracy

Active Publication Date: 2013-09-11
LEADCORE TECH
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Problems solved by technology

[0021] However, it can be seen from the above description that for the estimated data output by MMSE-BLE, since the original sent data in the estimated data has been scaled by diag(W), if the demodulation is directly based on the prior Euclidean distance, a certain Error, resulting in performance degradation, especially in high-order modulation such as 64QAM, the performance degradation is more obvious

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  • Device and method for calibrating output data of MMSE receiver
  • Device and method for calibrating output data of MMSE receiver
  • Device and method for calibrating output data of MMSE receiver

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[0036] According to the first embodiment of the present invention, the schematic diagram of the system with the MMSE receiver output data calibration device is as follows figure 1 shown.

[0037] The system 100 completes the TD-SCDMA system symbol (symbol) level received data processing, its input is received data Drec (including user data and training sequence), and its output is soft bits for channel decoding. The system 100 mainly includes a system matrix generation module 101 , an MMSE-BLE equalizer 102 (ie, an MMSE receiver), a demodulation module 103 and a calibration device 110 . The calibration device 110 further includes a calibration coefficient generation module 111 and a calibration module 112 .

[0038] The system matrix generation module 101 is used to perform processing such as channel estimation according to the training sequence and generate a system transmission matrix, namely the matrix A mentioned above. This module is well known to those skilled in the a...

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Abstract

The invention relates to a device and a method for calibrating output data of an MMSE receiver. The device can compensate for the zooming caused by an MMSE-BLE equalizer and improve the receiving performance during modulation, especially high-order modulation. Therefore, the device comprises a calibration coefficient generation module and a calibration module, wherein the calibration coefficient generation module estimates a calibration coefficient according to the receiving data and / or output data of the MMSE receiver, and the calibration module utilizes the calibration coefficient to calibrate the range of sending data of the output data of the MMSE receiver or the Euclidean distance used when the output data is demodulated.

Description

technical field [0001] The invention relates to a joint detection technology based on minimum mean square error-block equalization (MMSE-BLE), in particular to a device and method for calibrating the output data amplitude of an MMSE receiver. Background technique [0002] Quadrature Amplitude Modulation (QAM) uses two orthogonal carriers to modulate two parallel signals respectively, which can be equivalent to two pulse amplitude modulation (PAM) respectively carried on the orthogonal carriers. In the mobile communication system, QAM has obtained Wide range of applications. Among them, high-order modulations such as 16QAM and 64QAM can utilize bandwidth more effectively and support high-speed transmission. The HSPA technology of 3GPP uses 16QAM, which is a further development of High Speed ​​Packet Access (HSPA for short) technology. The evolution, HSPA+, further introduces the 64QAM method. [0003] Joint detection technology is a suboptimal method of multi-user detection...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L25/02H04L27/38
Inventor 王乃博李丹妮
Owner LEADCORE TECH