When a carrier aggregation communication system suffers from receiving power imbalance (RPI) in its antenna array due to design flaw, operator’s negligence etc. the system performance may be degraded to an unacceptable level. Specifically in this paper a carrier aggregation communication system with two carrier links while one link suffers RPI is considered, various modulation techniques, such ...

A simple technique for decoding an unknown modulated chaotic time-series is presented. We point out that, by fitting a polynomial model to the modulated chaotic signal, the error in the fit gives sufficient information to decode the modulating signal. For analog implementation, a lowpass filter can be used for fitting. This method is simple and easy to implement in hardware. Indexing terms: cha...

Orthogonal frequency division multiplexing (OFDM) is used in many wireless broadband communication systems because it is a simple and scalable solution to inter symbol interference caused by a multipath channel. OFDM is emerging as preferred modulation scheme in modern high data rate wireless communication systems. A well known problem of OFDM system is sensitivity to frequency offset between t...

For orthogonal frequency-division multiplexing (OFDM) communication systems, the frequency offsets in mobile radio channels distort the orthogonality between subcarriers resulting in intercarrier interference (ICI). This paper is focused on the problem of reducing the intercarrier-interference (ICI), signal to noise ratio and improved performance in the transmission over OFDM using various puls...

ISSN 2250 – 110X | © 2011 Bonfring Abstract--Communication plays very important role in day-to-day life of people. Due to fast growing age, multi carrier communication is preferred over single carrier waves for better transmission. One of the advantages of OFDM system over the single carrier system is the better performance in multipath environment. For narrowband operation, one may construct s...

This paper investigates the problem of wavelength assignment in dynamic wavelength reusable multicarrier distributed (WRMD) wavelength-divisionmultiplexing (WDM) networks. In WRMD network lightpath between source and destination edge nodes (ENs) are established by using multi-carrier light source (MCLS). An MCLS is a communication light source device that can generate multiple optical carriers ...

Most wireless communication techniques rely on broadcast media on the physical layer, i.e., the actual signal can be received by any party in a certain coverage area. Furthermore, there are cable-based networks, such as HFC (hybrid fiber/coaxial) networks that use a shared transmission medium (coaxial cable) to bridge the last mile. A common means to perform secure unicast (point-to-point) comm...