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Method and device for intercepting baseband signal

A baseband signal and signal processing technology, which is applied to baseband system components, shaping networks in transmitters/receivers, electrical components, etc., can solve the problem of redundant data information, etc., to reduce storage space and power consumption, The effect of reducing bit width and saving cost

Active Publication Date: 2011-07-20
SANECHIPS TECH CO LTD
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and device for truncation of baseband signals, which solves the problem of more data redundancy information obtained by fixed truncation method, realizes more effective truncation of data, and reduces storage space and Baseband processor cost and power consumption

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  • Method and device for intercepting baseband signal

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Embodiment Construction

[0023] In the embodiment of the present invention, the maximum value of the energy path or the noise average value obtained in the last threshold detection is adopted to dynamically intercept the high and low bits of the ADP set. For example, use the maximum energy path of the previous ADP set, preferably truncated to 8bit, so that one ADP data can be stored in an 8-bit RAM. Since 12-16bit requires 16bit RAM to store, it is better than The original 12-16bit is stored in two 8-bit RAMs, which saves 1 times the storage space. On the whole, the baseband processor of a base station needs to support hundreds of terminals, saving 1 times the RAM storage space, the power consumption and area of ​​the chip have been greatly reduced, saving costs, can support more users, and can guarantee performance.

[0024] The specific embodiments of the present invention will be described below in conjunction with the drawings.

[0025] When the searcher processes the baseband signal, it first perfor...

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Abstract

The invention discloses a method and device for intercepting a baseband signal. The method comprises the following steps of: performing signal processing on the baseband signal to obtain an amplitude delay profile (ADP) set; intercepting a bit where the maximum value of the energy path of the ADP set is positioned and 8-12 bits below the bit by taking the maximum value of an energy path detected by adopting a previous threshold as an intercepting parameter to obtain sampled data; or intercepting a bit where the average noise value of the ADP set is positioned and 8-12 bits above the bit by taking an average noise value detected by adopting the previous threshold as the intercepting parameter to obtain sampled data. By adopting the method and the device, the bit width of the signal can be reduced, the effect of reducing chip storage space and power consumption is achieved and the chip cost is saved. If 8 bits are intercepted from one sampled datum, storage space is saved by one time compared with the conventional way for storing two 8-bit RAMs (Random Access Memories) within 12-16 bits.

Description

Technical field [0001] The invention relates to a wideband code division multiple access communication system, in particular to a method and device for truncating baseband signals. Background technique [0002] In the Wide Code Division Multiple Access (WCDMA) communication system, the base station needs to search and synchronize the uplink signal, and the terminal needs to search and synchronize the downlink signal. The base station and the radio frequency module of the terminal receive the radio frequency signal and respond to the signal. Perform demodulation to obtain baseband information. The baseband processor needs to descrambling and despreading the baseband signal. The data after descrambling and despreading needs to be coherently accumulated and incoherent accumulation. When the amplitude obtained after coherent accumulation and incoherent accumulation is The Amplitude Delay Profile (ADP) set needs to be truncated. [0003] The current truncation method is a fixed truncat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04B1/7073
CPCH04B1/711
Inventor 赵天虹官华伯闫晓伟
Owner SANECHIPS TECH CO LTD
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