Abstract—In this paper, the performance of generalised spatial modulation (GSM) using large scale multiple–input multiple– output (MIMO) systems is analysed from an information– theoretic point of view. The analysis is extended to account for the average bit error ratio (ABER). We introduce a simple model for the capacity which allows us to derive a closed–form expression for the capacity of GS...

The Japan Meteorological Agency (JMA) upgraded the resolution of the Global Spectral Model (GSM) from TL319L40 to TL959L60 on 21 November 2007, when the Typhoon Model retired from operational use. Since then, tropical cyclone (TC) track and intensity forecasts have been supported by GSM only. GSM provides numerical weather prediction (NWP) products four times a day for all TCs existing globally...

The overlay of an intelligent frequency diversity spread spectrum system (FDSS) on the (GSM) system is studied. The uplink capacity of both systems is given using a model of 36 hexagonal macrocells. Performance of GSM and FDSS users is investigated. An original GSM system with 48 users/macrocell can be substituted by a mixed system, which has GSM system capacity of 48 users/macrocell and FDSS s...

This document provides an overview on the key measurements required for testing GSM transceivers. GSM mobile performance derivation is also discussed. This overview is intended to help a RF designer with no GSM RF system knowledge to get up to speed with the GSM system. Various systems are compared (GSM900, DCS1800, PCS1900, CT2, and DECT). Key design issues such as phase error and frequency er...

The broadcast nature of radio medium in GSM networks makes them more vulnerable to various attacks. Any attacker can have complete control over the communication channel, listen to phone calls, read email, and spy on whatever data has been sent via GSM mobile communication system. This paper introduces a middleware security system that aims to protect the GSM communication channel and minimize ...

Current security model in Global System for Mobile Communications (GSM) predominantly use symmetric key cryptography. The rapid advancement of Internet technology facilitates online trading, banking, downloading, emailing using resource-constrained handheld devices such as personal digital assistants and cell phones. However, these applications require more security than the present GSM support...

This article contains a current outline of the GSM system security, with focus on the air interface protocol. It presents the terminology and describes the GSM security operation, including its principles and features. This document also discusses the effectiveness of GSM authentication and the strength of GSM encryption. It includes therefore the most significant physical and cryptanalytic att...