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Signal detection method and apparatus

A signal detection and signal technology, which is applied in receiver monitoring and other directions, can solve the problems of poor reception performance, affecting the detection performance of signal detection algorithms, statistical characteristics not strictly obeying the white noise distribution, etc., and achieve the effect of improving detection performance

Active Publication Date: 2015-09-30
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0015] It can be seen that because the traditional signal detection method does not consider the influence of the non-ideal factors of the transmitter, the colored noise Assumed to be Gaussian white noise, but in practice, Statistical properties do not strictly obey the distribution of white noise, the existing technology will be colored noise Assuming Gaussian white noise will make the reception performance worse, thus affecting the detection performance of the signal detection algorithm

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Embodiment Construction

[0041]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] Embodiments of the present invention are applicable to LTE (Long Term Evolution, 3GPP long-term evolution) system, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time division synchronous code division multiple access) system, GSM (Global System for Mobile Communications, global Mobile communication) system, WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) system, CDMA-2000 (Co...

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Abstract

The embodiment of the invention, which relates to the wireless communication field, discloses a signal detection method and apparatus, thereby improving the detection performance of the signal detection algorithm. According to the embodiment of the invention, a receiver receives a wireless communication signal transmitted by a transmitter; the receiver carries out pre-whitening processing on the received wireless communication signal according to a non-ideal factor pre-whitening matrix, wherein the non-ideal factor pre-whitening matrix is obtained based on determination by the receiver at least according to a power of a non-ideal factor error vector; and then the receiver carries out signal detection on the wireless communication signal after pre-whitening processing. Therefore, the detection performance of the signal detection algorithm can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a signal detection method and device. Background technique [0002] The wireless communication system transmitter has non-ideal factors such as power amplifier nonlinearity, I / Q (In-phase / Quadrature, in-phase quadrature, in-phase quadrature) imbalance, non-ideal radio frequency and other non-ideal factors, resulting in a certain deviation between the transmitted signal and the ideal expected value. In the prior art, for a transmission system with M-layer spatial multiplexing transmission at the sending end and N receiving antennas at the receiving end, its transmission model can be expressed by the following formula: [0003] y=Hs+n [0004] Among them, y is the receiving vector of N×1, H is the N×M frequency domain channel matrix considering coding, s is the transmitting symbol vector of M×1, and n is the noise vector of N×1; assuming that each element in s from c...

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Application Information

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IPC IPC(8): H04B17/20
Inventor 白文岭张艳吴凯
Owner DATANG MOBILE COMM EQUIP CO LTD
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