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Communication system and device for mobile terminal with multiple antenna array

A mobile terminal, antenna array element technology, applied in antenna arrays, diversity/multi-antenna systems, antennas, etc., can solve problems such as complexity and increased complexity of hardware modules

Inactive Publication Date: 2005-06-08
KONINK PHILIPS ELECTRONICS NV
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  • Application Information

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Problems solved by technology

[0020] Although in both methods, the weight vectors are calculated using the eigenvectors and eigenvalues ​​based on the autocorrelation matrix of the input signal W , when demodulating information from the weighted combined signal, a better system performance has been achieved. However, the above two methods, when using the eigenvectors and eigenvalues ​​of the input signal autocorrelation matrix to calculate the weighted vector W It is very complex, and the complexity of the hardware module that executes the algorithm is also increased accordingly

Method used

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  • Communication system and device for mobile terminal with multiple antenna array
  • Communication system and device for mobile terminal with multiple antenna array
  • Communication system and device for mobile terminal with multiple antenna array

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Embodiment Construction

[0030] Suppose the power of the signal d(t) transmitted by the base station BS is 1, namely: E{|d(t)| 2}=1, E{|d(t)| 2} represents the mathematical expectation (Expectation) operation on the signal d(t), then according to equation (2), according to the principle of maximum signal-to-noise ratio, the cost function (cost function) F( W ) can be expressed in the form of equation (3):

[0031] F( W )=E{| W H · h 1 d(t-t 1 )| 2 +| W H · h 2 d(t-t 2 )| 2 +...

[0032] +| W H · h L d(t-t L )| 2} / E{| W H · z (t)| 2}

[0033] =( W H · R hh · W ) / ( W H · R zz · W ) (3)

[0034] in:

[0035] [.] H Indicates the mathematical operation conjugate transpose

[0036] R hh is the vector channel response autocorrelation matrix, and

[0037] R hh ={ h 1 · h 1 H + h 2 · h 2 H +...+ h L · h L H} / L

[0038] h l Represents the vector channel response of the signal transmitted to the receiver via the l path, L ...

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Abstract

The invention is a communicating method in mobile terminal with many antenna array elements, including the steps: receiving corresponding receiving vector signals coming from many antenna array elements; according to the corresponding receiving vector signals, calculating their respective proper weighted vectors; and making weighted combination on the corresponding proper weighted vectors and their respective receiving vector signals to obtain an output signal with the maximum SNR, and the method not only keeps good system performance but also effectively reduces the complexity of generating weighted vectors.

Description

technical field [0001] The present invention relates to a communication method and device, in particular to a communication method and device for a mobile terminal with multiple antenna array elements. technical background [0002] Multi-antenna (multiple-antenna) technology usually uses two or more single-antenna elements to form an antenna array, and adjusts the phase of the received signal by weighting the signal received by each antenna element. And the amplitude, so that after the received signal is weighted and summed, the required signal is strengthened, and the interference signal is weakened. Compared with the traditional single-antenna technology, the multi-antenna technology has a good application prospect in the communication field due to its special advantages in overcoming multi-path interference problems. [0003] In the wireless communication system, the multi-antenna technology can not only be applied to the base station to improve the signal receiving perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04L25/02
CPCH04B7/0857H04L25/0204H04L25/0248H04B7/08
Inventor 徐绿洲李焱戴延中刘健
Owner KONINK PHILIPS ELECTRONICS NV
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