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Method and circuit for limiting the power of a signal compiled from spread-coded signals

A code signal, signal technology, applied in the field of limiting the signal power and circuit of editing self-expanding code signal

Inactive Publication Date: 2012-02-29
INTEL MOBILE COMM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In addition, the previous technology does not consider the impact of garbled coding and the impact of the pulse shaping filter or two synchronization channels at the transmitter
Furthermore, the technical principles known from the prior art can only be applied if exactly one garbled code is used in the base station; the use of different garbled codes is therefore not considered

Method used

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  • Method and circuit for limiting the power of a signal compiled from spread-coded signals
  • Method and circuit for limiting the power of a signal compiled from spread-coded signals
  • Method and circuit for limiting the power of a signal compiled from spread-coded signals

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Embodiment Construction

[0058] figure 1 It shows the unwrapping code and modulating circuit device in the base station of the universal mobile telecommunications system. The figure is oriented towards the Universal Mobile Telecommunications System standard document 3GPP TS 25.213 V5 3.0. The following first illustrates the use of spreading codes from multiple channels processed in parallel and encoding with garbled codes. The serial signal input b1 from the actual channel of a specific data rate is converted to a parallel signal on the basis of two bit streams in unit 2. The two bit streams are then mapped to the I and Q paths by the mapping unit 3 according to modulation types such as Quadrature Phase Shift Keying (QPSK) or 16 Quadrature Amplitude Modulation (QAM). The final composite signal is coded with composite channelization C using two multipliers 4 ch，SF，k Expand. Each physical channel is assigned a dedicated channelization code C ch，SF，k . Channelization Coding C ch，SF，k is an orthog...

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Abstract

The invention relates to a method of the invention which is used for limiting the power of a transmission-end signal (x<n>) compiled from a plurality of differently spread-coded signals. In this context, it is assumed that the quantity of spread codes used for the differently spread-coded signals is known as code engagement information (80; C<ch, SF, k>). First, correction spread codes are selected by virtue of the engagement information (80; C<ch, SF, k>) being evaluated. On the basis of the selected correction codes, a spread-coded correction signal (y'<n>) is formed which is overlaid with the compiled signal (xn).

Description

technical field [0001] The present invention relates to a method and a suitable circuit for limiting the power of a transmitting signal compiled from a plurality of different spreading coded signals. Background technique [0002] In 3G WCDMA-based systems such as UMTS, users are separated by using user-specific spreading codes. In this example, each symbol in a particular user data queue is multiplied by a spreading code. The components of the final queue are called chips. Each UE-specific transport channel is in this case assigned a dedicated spreading code, also called channel coding. The user entity channels are the spreading codes using channel coding. For the UMTS, the generation of transmission signals in the downlink, ie from the base station to the mobile station, is described in the UMTS standard document 3GPP TS 25.213 V5.3.0. [0003] Channel coding is an Orthogonal Variable Spreading Factor (OVSF) spreading code. These are described in the Universal Mobile T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04B1/707H04J13/00H04J13/12H04J13/20
CPCH04J13/12H04J13/20H04J13/0044H04B2201/70706H04B1/707
Inventor S·马斯里D·斯他雷斯尼格
Owner INTEL MOBILE COMM GMBH