The frequency assignment is an important task in the design of radio network. Let us concider a GSM network N composed of a set of nc cells: C= {C1, C2 . . . Ci, . . . Cnc}. Each cell required a number of frequencies which is defined by the number of transceivers TRX or traffic demand Di= {1, 2 . . . , x}An interval of operational frequencies: [Fmax − Fmin]. Further, consider a matrix: MCo[nc][...

Vector quantisation is a widely used technique in low-bit rate coding of speech and image data, but is highly sensitive to noise in the transmission channel. If the reference vector recalled by a corrupted index di ers greatly from the intended reference vector, image quality can be degraded quite dramatically. The index assignment (IA) process attempts to re-order the code book so as to minimi...

Cellular data and communication networks are usually modeled as graphs with each node representing a base station in a cell in the network, and edges representing geographical adjacency of cells. The problem of channel assignment in such networks can be seen as a graph multicoloring problem. We survey the models, algorithms, and lower bounds for this problem. — 1.1 INTRODUCTION In a cellular ne...

In this paper, a new multistage self-organizing channel assignment algorithm with a transiently chaotic neural network (MSSO-TCNN) is proposed as an optimization algorithm. The algorithm is used for assigning channels in cellular mobile networks to cells in the frequency domain. The MSSO-TCNN consists of a progressively initial channel assignment stage and the TCNN assignment stage. According t...

Three dimensional packaging is becoming a popular concept because of the numerous advantages it has to offer over the existing conventional technologies such as PCB and MCM. System on Packages (SOP) is an example of three dimensional packaging. In this paper, we present the channel and pin assignment algorithms for 3D packaging routing. There exist multiple floorplan, routing, and pin distribut...

In wireless mesh network, by equipped mesh router with multiple radios tuned into orthogonal channels, throughput improvement problem can be alleviated. Efficient channel assignment and link scheduling is essential for throughput improvement. Effective channel assignment schemes can greatly relieve the interference effect between nearby transmissions. However, not only the links in wireless mes...

For efficient use of limited electromagnetic wave resource, the assignment of communication channels to call requests is very important in a cellular network. This task has been formulated as an NP-hard combinatorial optimization problem named the channel assignment problem (CAP). Given a cellular network and a set of call requests, CAP requires to find a channel assignment to the call requests...