In wireless communications systems, Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) are used to improve spectral efficiency and spatial diversity. Beamforming is used to improve bandwidth utilization. It increases the network range in wireless systems. The main challenge of OFDM system is Carrier frequency offset (CFO). The project focuses on CFO esti...

In this paper, a Bit Error Rate (BER) analysis is presented for Multiple-Input Multiple-Output (MIMO) schemes in the 3GPP Long Term Evolution (LTE) system. Analytical expressions for the average BER of the system are derived over flat Rayleigh fading channels for two different MIMO schemes as defined in LTE, assuming M-ary quadrature amplitude modulation (M-QAM) schemes and are evaluated numeri...

In today’s era multiple input and multiple output (MIMO) system is one of the most emerging experimentation field in wireless communication. This research paper shows the capacity of MIMO system over Rayleigh, Rician, Nakagami and weibull distributions by using Water filling Model. The probability density function is also shown in this paper for MIMO system under different fading channels which...

MIMO is a model that tries to integrate some of the main current object models (SQL3, ODMG-93, UML), covering all the database development phases. It is defined in the framework of the ENEASIBD project, that is being developed by the “Grupo de Bases de Datos Avanzadas ” at “Universidad Carlos III” (Madrid, Spain). An objective of ENEAYBD is to allow generation of ODMG-93 andor SQL3 schemata >om...

MIMO systems are used in wireless communications for enhancement of capacity. The number of transmit and receive antennas effect the tradeoff between performance gain and that of multiplexing gain. In this paper we are considering the study of Rayleigh fading affecting the capacity of MIMO channel by mat lab simulation. The Singular Value Decomposition (SVD) has been used to explore further ins...

We theoretically study the performance of multiple-input multiple-output (MIMO) free-space optical (FSO) systems using subcarrier quadrature modulation (SC-QAM) signaling. The system average symbolerror rate (ASER) is derived taking into account the atmospheric turbulence effects on the MIMO/FSO channel, which is modeled by log-normal and the gamma-gamma distributions for weak and moderate-to-s...

We theoretically analyze the performance of multipleinput multiple-output (MIMO) free-space optical (FSO) systems using subcarrier quadrature modulation (SC-QAM) signaling. The system average symbol-error rate (ASER) is derived taking into account the atmospheric turbulence effects on the MIMO/FSO channel, which is modeled by lognormal and the gamma-gamma distributions for the cases of weak-to-...

The emergence of broadband wireless access (BWA) and mobility poses significant challenges to the future telecommunications landscape. Multiple input multiple output (MIMO) is a potential technology that can be used to improve system performances such as coverage, capacity and data rates for broadband wireless networks. Although this technology has proved to be beneficial for both current and f...

Hailed as a very important breakthrough in recent times, multiple antenna systems, also called as multiple input multiple output (MIMO) systems have been shown to have enormous gains over conventional systems in point-to-point scenarios for both wireless and wire-line environments. A very important litmus test for the real promise of MIMO systems is in their performance in multi-user scenarios....

Although the Multi-Input and Multi-Output (MIMO) communication systems provide very high data rates with low error probabilities, these advantages are obtained at the expense of having high signal processing tasks and the hardware cost, e.g. expensive Analog-to-Digital (A/D) converters. The increased hardware cost is mainly due to having multiple Radio Frequency (RF) chains (one for each antenn...