With the development of technology, QR codes play an important role in information exchange. In order to work out problem uneven illumination automatic sorting logistics systems, adaptive method binarization is presented. The proposed defines block windows’ size adaptively for local based on traits code. It takes advantage integral images calculate sum gray values a block. can binarize code wit...

Multipath propagation is a major source of degradation in the performance of conventional PN code tracking loops. The mean-square tracking error of a conventional delay-locked loop (DLL) exhibits an irreducible floor due to the presence of closely spaced multipath components. In this paper, we present a new PN code tracking algorithm that does not suffer from the presence of multipath component...

In this paper, the comparative studies of Adaptive Region Based Huffman compression techniques are done. All these techniques use a region formation algorithm that is also discussed. This algorithm is used to form regions whose size is adjusted depending on the ASCII value difference of elements in the file. One of the techniques is Size Adaptive Region Based Huffman Compression (SARBH) where H...

At design time, the compiler writer selects a set of optimizations and an order in which to apply them. These choices have a direct impact on the quality of code that the compiler can generate. They also determine, to a great extent, the set of programs for which the compiler generates good code. Making good choices is difficult for several reasons. The sheer number of transformations that have...

Multi-user detection is an effective method to reduce multiple access interference in code division multiple access (CDMA) systems. This paper discusses a signal subspace based blind adaptive multiuser detector and a Kalman filtering blind adaptive multiuser detector. Combining them together, a new Kalman filtering blind adaptive multiuser detector based on a tracking algorithm of the signal su...

In this paper we consider a single-user adaptive receiver for interference suppression in asynchronous direct sequence code division multiple access (DSCDMA) communication systems with large processing gains. We propose an decomposed adaptive jilter structure for which each decomposed filter can be updated either in coupled way or in uncoupled waywith itsprevious filters. Performance results fo...