Communication device and method for receiving multi-carrier modulated signal
A technology of multi-carrier modulation and communication device, which is applied in the field of communication and can solve the problems of computational complexity and unfavorable memory usage.
Inactive Publication Date: 2020-04-21
HUAWEI TECH CO LTD
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However, this iterative TEQ filter design algorithm still requires a matrix inversion per iteration, which, while superior to other state-of-the-art methods, is disadvantageous with respect to computational complexity and memory usage
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[0078] In the following description, reference is made to the accompanying drawings which form a part hereof and in which are shown, by way of illustration, specific aspects in which the invention may be placed. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be considered in a limiting sense, since the scope of the invention is defined by the appended claims.
[0079] For example, it should be understood that a disclosure in connection with a method described is also applicable to a corresponding device or system configured to perform the method, and vice versa. For example, if specific method steps are described, a corresponding device may include means for performing said method steps, even if such means are not explicitly described or shown in the figures. Furthermore, it should be understood that the f...
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The invention relates to a communication apparatus (400) for receiving a multicarrier modulation signal (401) over a communication channel, the communication channel being associated with a channel impulse response vector h, the communication apparatus (400) comprising: a time domain filter (403) configured to filter the multicarrier modulation signal (401) on the basis of a plurality of filter coefficients w configured to reduce the delay spread of the multicarrier modulation signal caused by the communication channel; and a determiner (405) configured to determine the plurality of filter coefficients w on the basis of an effective channel impulse response vector b i , wherein the determiner (405) is configured to determine the effective channel impulse response vector b i by starting from the channel impulse response vector h and iteratively adjusting the effective channel impulse response vector b i -1 of the (i - 1)-th iteration on the basis of an adjustment vector d i -1, wherein each iterative adjustment of the effective channel impulse response vector b i -1 of the (i - 1)-th iteration on the basis of the adjustment vector d i -1 comprises an element-wise division or multiplication operation of the effective channel impulse response vector b i -1 of the (i - 1)-th iteration with the adjustment vector d i -1.
Description
technical field [0001] Generally, the present invention relates to the field of communications. More particularly, the present invention relates to a communication device and method for performing time-domain equalization on a multi-carrier modulated signal received over a communication channel. Background technique [0002] Discrete Multitone (DMT) is an Orthogonal Frequency Division Multiplexing (OFDM) technique used in the context of wireless communication systems. In DMT, data (e.g., QAM symbols) is organized into blocks of Q samples transformed at the transmitter by an inverse discrete Fourier transform (IDFT), and before transmission on the channel, each Transformed blocks are expanded. If the channel discrete impulse response, including the effects of the transmit and receive filters, is shorter than the duration of the CP, then the CP part at the receiver can be discarded and, by performing a discrete Fourier transform (DFT) on the remaining part of the received si...
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IPC IPC(8): H04L25/03
CPCH04L25/03019H04L2025/03414H04L2025/03611
Inventor 阮万明斯特凡诺·托马辛
Owner HUAWEI TECH CO LTD