A generic radio channel emulator to evaluate higher layer protocols in a CDMA system

Abstract

Currently, we are involved in a standardisation process to specify the next mobile system generation. A Wideband Code Division Multiple Access (WCDMA) system is considered in most of the region versions. It would be very useful to count on a radio channel emulator which allows to evaluate higher layers protocols within this context. This paper presents a radio channel emulator developed for a Code Division Multiple Access (CDMA) based system. Its versatility and low complexity have been exposed, and the validation process to check the model accuracy has also been shown for this system as an example.

Guaranteed Bit Rate Traffic Prioritisation and Isolation in Multi-tenant Radio Access Networks

“…Markovian approaches have been widely used to characterise the resource sharing paradigm in many fields, such as in mobility [12], cloud computing [13], Asynchronous Transfer Mode (ATM) dynamic capacity allocation [14] as well as in cellular networks (see e.g., [15] for a CDMA radio channel emulator, [16] for a Call Admission Control (CAC) scheme for 3G or [17] for heterogeneous networks Radio Access Technologies (RAT) policies). More recently, works in the field of 5G exploit Markov modelling for high mobility networks [18] [19].…”

A radio channel emulator for WCDMA, based on the hidden Markov model (HMM)

“…As a first step, an emulator for the CoDiT access scheme [2], which is based on a CDMA technique, has been developed [3]. The results are very pleasant since the emulation of the channel error characteristics is accurate enough, simple enough to implement, able to work in real time and flexible enough to cope with the requirements from different demonstration scenarios.…”