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Radio receiving device and radio receiving method

A wireless receiving device and a technology for receiving signals, which are applied in wireless communication, radio transmission systems, antennas, etc., and can solve problems such as increasing the amount of computation and increasing the scale of the device, and making it difficult to implement

Inactive Publication Date: 2002-07-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when simply combining the array antenna and the interference canceller, the amount of computation and the size of the device will increase, and it is very difficult to realize when actually considering the hardware design

Method used

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  • Radio receiving device and radio receiving method
  • Radio receiving device and radio receiving method
  • Radio receiving device and radio receiving method

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Embodiment 1

[0021] figure 1 A block diagram of main parts showing a schematic configuration of a wireless receiving apparatus according to Embodiment 1 of the present invention. In the following description, a case where the number of stages of interference cancellers is three, the number of communication partners is three, and the number of multipaths is three will be described as an example. Each of the above numbers is an example, and this embodiment is not limited to these numbers.

[0022] Such as figure 1 As shown, since the first stage and the second stage have the same structure, the same components are assigned the same reference numerals, and the description of the second stage is omitted.

[0023] exist figure 1 Among them, the signal received by the antenna 101-1 is input to the ICU (Interference Canceling Unit: Interference Cancellation Unit) 102-1-3 and the delayer 103-1 corresponding to the antenna 101-1. Likewise, the signals received by the antenna 101-2 are input to ...

Embodiment 2

[0068] The wireless receiving device and the wireless receiving method according to the second embodiment of the present invention eliminate the interference signal for each communication partner sequentially in one stage, and gradually update the receiving weight for each communication partner in one stage.

[0069] Figure 6 A block diagram of main parts showing a schematic configuration of a wireless receiving apparatus according to Embodiment 2 of the present invention. Figure 6 The shown ICU606-1~3 and figure 2 The illustrated ICU 102-1 has the same configuration, so detailed description of each ICU will be omitted. but, Figure 6 ICUs 606 - 1 and 2 of the third stage shown are configured to output replica signals and output demodulated signals 1 and 2 , respectively. also, Figure 6 Level 3 shown in ICU606-3 employed with image 3 The shown ICU106-1 has the same structure and outputs demodulated signal 3.

[0070] Such as Figure 6 As shown, since the first stag...

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Abstract

A reception weight calculation section 203 calculates reception weights W1 and W2 every antenna using an optimal directional control method in order to improve interference cancellation effect, an arrival direction estimation section 204 estimates a direction of arrive of a received signal for each antenna to calculate steering vectors S1 and S2 for each antenna, and a replica weight calculation section 211 calculates replica weights Wr1 and Wr2 using the reception weights W1, W2 and steering vectors S1, S2.

Description

technical field [0001] The present invention relates to a wireless receiving device and a wireless receiving method used in a CDMA (Code Division Multiple Access: Code Division Multiple Access) mobile communication system. Background technique [0002] In a mobile communication system based on CDMA, since signals of a plurality of users are transmitted in the same frequency band, signals received by a wireless receiving apparatus are interfered by various signals, and characteristics are deteriorated. [0003] An array antenna is known as a means for canceling the above interference. The so-called array antenna is composed of a plurality of antenna elements, and the receiving directivity can be freely set by adjusting the amplitude and phase of the signal received by each antenna element. In this case, adjustment of the amplitude and phase of the received signal can be performed by multiplying the received signal by a weighting factor (hereinafter, the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/26H04B1/10H04B1/7107H04B7/08H04B7/10H04B7/26H04J13/00H04W16/28
CPCH01Q3/2617H04B7/086
Inventor 三好宪一
Owner PANASONIC CORP
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