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Methods for operating slaves

A master station, precoding matrix technology, applied in the direction of shaping network, space transmit diversity, transmission system, etc. in transmitter/receiver, can solve problems such as unclearness and reduced computational complexity

Active Publication Date: 2016-02-10
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There may also be some reduction in computational complexity with a restricted alphabet, but it's not clear how meaningful this consideration will be in practice

Method used

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  • Methods for operating slaves
  • Methods for operating slaves
  • Methods for operating slaves

Examples

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Embodiment Construction

[0023] The present invention relates to a mobile communication system, such as 802.11 (eg 802.11n) or UMTS (eg UMTSLTE) or such as figure 1 LTE-Advanced system shown in .

[0024] refer to figure 1 , the radio communication system according to the present invention includes a primary station (BS or eNodeB) 100 and a plurality of secondary stations (MS or UE) 110 . The master station 100 comprises: a microcontroller (μC) 102; a transceiver arrangement (Tx / Rx) 104 connected to an antenna arrangement 106, here an antenna array circuit comprising a plurality of antennas and for controlling the antenna weights Antenna array; power control means (PC) 107, which is used to change the power level of the transmission; and connection means 108, which is used to connect to PSTN or other suitable network. Each UE 110 comprises: microcontroller (μC) 112; transceiver means (Tx / Rx) 114 connected to antenna means 116, here an antenna array circuit comprising a plurality of antennas and for ...

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PUM

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Abstract

The invention relates to a method for operating a slave station in a communication network comprising a master station, the method comprising: generating a precoding matrix obtained from the Hadamard product of the alphabet modification matrix and the original precoding matrix, Wherein the original precoding matrix includes complex coefficients of equal amplitude; and a precoding report representing the precoding matrix is ​​sent to the main station.

Description

technical field [0001] The invention relates to a method for operating a secondary station in a communication system, such as a mobile communication system like LTE. In such communication systems, stations may be able to communicate via MIMO transport streams. [0002] The invention is eg related to LTE or LTE-Advanced. Background technique [0003] In systems using MIMO such as LTE, a secondary station (or user equipment or UE) may give feedback to a primary station (or base station or eNB) about the downlink channel state. This may partly include an index of a preferred precoding matrix selected from the matrix codebook. Alternatively, as proposed for LTE-A, a precoder is defined by a pair of indices, one for each of the two codebooks, where the precoder is derived from a matrix multiplication of two matrices. In this case, there may be more than one particular type of "matrix multiplication" that can be applied. [0004] Typically, a precoding matrix is ​​defined such...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04B7/06
CPCH04B7/0639H04L25/03343H04L2025/03808H04B7/0663H04B7/0417H04B7/0456H04B7/0482
Inventor T.J.穆斯利
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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