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Method for generating transmitting signal vector in state of effective transmission channel in wireless communication system

A technology for transmitting signals and communication systems, applied in radio transmission systems, transmission systems, multiplexing communications, etc.

Inactive Publication Date: 2003-07-02
ノキアソリューションズアンドネットワークスゲゼルシャフトミットベシュレンクテルハフツングウントコンパニーコマンディトゲゼルシャフト
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, other optimization criteria like the directional characteristics of the transmitted signal are not considered in this method

Method used

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  • Method for generating transmitting signal vector in state of effective transmission channel in wireless communication system
  • Method for generating transmitting signal vector in state of effective transmission channel in wireless communication system
  • Method for generating transmitting signal vector in state of effective transmission channel in wireless communication system

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Experimental program
Comparison scheme
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Embodiment Construction

[0037] specific implementation plan

[0038] Next, observe the transmission model of the downlink segment in a cellular mobile radio system unit, such as figure 1 shown.

[0039] In this cell, K mobile stations are simultaneously active MS, which are powered by the base station or transmitting station BS to which the cell belongs. Use on the transmitter station BS with K B The group antennas of the antenna unit, in contrast, use the receive antennas on each MS. For each MS, the resulting wireless scheme can be passed with K B User-specific network simulation of inputs and an output, see figure 1 . In this network, the channel impulse response of dimension W h ‾ ( k , k B ) = ( h ‾ ...

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Abstract

The invention relates to a method for generating transmitting signal vector s in wireless communication system with at least one sending station (BS) and at least one receiving station (MS), wherein the transmitting signal (s bar = M bar.d bar) is generated by basic linear modulation of a data vector (d bar) with at least one modulator matrix (M bar). The sending station (BS) comprises a KB antenna with KB > / = 1 antenna unit, which sends single signal s<(k>B). The transmitting signal vector s comprises single signal s<(k>B)as component. According to the invention, a hermitic matrix R bar which describes the transmission characteristic is provided, wihch estimates the formation in hermitic mode of the emission signal vector s and the result vector s of matrix R, which forms a result matrix that results in predetermined transmission conditions at the transmission station. The modulator matrix M is derived from the result matrix. Individual signals s<(k>B) are calculated using the modulator matrix prior to emission.

Description

technical field [0001] The invention relates to a method for generating transmit signal vectors in a radio communication system with at least one transmitting station and at least one receiving station according to the method described in the preamble of claim 1 . Background technique [0002] In wireless-communication systems, information (such as voice, image information, video information, SMS (Short Message Service) or other data) is transmitted by means of electromagnetic waves through a wireless cross point between a transmitting station and a receiving station (base station or subscriber station) transmission. In this case, electromagnetic waves are transmitted using a carrier frequency in a frequency band specified by the respective systems. For the employed GSM mobile communication system (Global System for Mobile Communications), carrier frequencies of 900, 1800 and 1900 MHz are used. For future mobile communication systems using CDMA or TD / CDMA transmission meth...

Claims

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Application Information

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IPC IPC(8): H04B1/02H04B1/707H04B7/204H04B7/26H04Q7/20H04Q7/30
CPCH04B1/707
Inventor P·-W·拜尔M·哈尔德特C·A·约藤M·莫伊雷尔H·特雷格尔
Owner ノキアソリューションズアンドネットワークスゲゼルシャフトミットベシュレンクテルハフツングウントコンパニーコマンディトゲゼルシャフト
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