We briefly explain the concept of cyclic delay diversity (CDD) as a variant of standard conformable delay diversity techniques. Usually being implemented at the transmitter side of an OFDM based system, the application of CDD is recognized at the receiver side only by observing modified channel propagation conditions. Therefore, we analyze the effect of CDD on the channel fading properties obse...

W ireless systems continue to attract immense research and development effort. Recent years have seen major technological advances, including the rollout of 2.5G and 3G cellular infrastructures as well as the advent of broadband fixed-wireless access (BFWA) systems and digital video broadcasting (DVB). “Wireless beyond 3G” is a new concept that envisions cellular, BFWA, and DVB systems cooperat...

A new modulation technique, "SP-QPSK" (sinusoidal shaped d4-QPSK) suitable for land-mobile and satellite digital broadcasting systems applications is introduced. In digital data and/or sound broadcasting systems, which may have a relatively low bit rate transmission requirement, the residual phase noise introduced by the Doppler shift of moving vehicles presents a high bit error floor in cohere...

Interference alignment (IA) is a cooperative transmission strategy that improves spectral efficiency in high signal-to-noise ratio (SNR) environments, yet performs poorly in low-SNR scenarios. This limits IA’s utility in cellular systems as it is ineffective in improving cell-edge data rates. Modern cellular architectures such as distributed antenna systems (DAS), however, promise to boost cell...

In this paper, an end-to-end Quality of Service (QoS) framework for streaming services in 3G mobile networks is considered. A solution based on a Public Land Mobile Network (PLMN) hosted multimedia streaming service is studied to avoid accessing through an external IP packet data network (IP-PDN) to streaming services. Under this scenario, the interaction between UMTS and IETF protocols and mec...

Electronic news gathering and live outside broadcasts need a quick and easy method of getting the programme material back to base. The success of mobile telephones has encouraged the telecommunications industry to develop more advanced systems offering higher capacities. Mobile Broadband System (MBS) is a wireless cellular radio network supporting services up to 34 Mbits/s. The network is being...

As the rollout of 4G mobile communication networks takes place, representatives of industry and academia have started to look into the technological developments toward the next generation (5G). Several research projects involving key international mobile network operators, infrastructure manufacturers, and academic institutions, have been launched recently to set the technological foundations ...

It is essential to have deep understanding of the mobile radio channel in particular for radio communication modeling and advanced technology system design. Models for the mobile radio channel are vital for the study of smart antenna systems, both for the design of algorithms, systemtesting purposes, and for network planning. This paper provides an intensive study of the spatial characteristics...