The superiority of multiple-input multiple-output (MIMO) radars over conventional radars has been recently shown in many aspects. These radars consist of many transmitters and receivers located far from each other. In this scenario, the MIMO radar is able to observe the targets from different directions. One of the advantages of these radars is exploitation of Doppler frequencies from different...

MIMO antennas are a type of antennas using more than one antenna for transmission and reception of signals. The proposed 2x2 MIMO antenna having two antennas in that one antenna is horizontally polarized and another antenna is vertically polarized. The proposed antenna works on C band. The newly designed 2x2 MIMO system works on 5GHz with 250MHz-300MHz bandwidth with reduced VSWR and high gain....

Different antenna arrays are used at transmitter and receiver in MIMO communication system. The different multipath causes the interference at the receiver which impacts on the efficiency and also increases the channel estimation error of the MIMO system. Here I have studied over different antenna arrays and their radiation patterns with individual gains and efficiency and also a Proposal for b...

Multiple-input multiple-output (MIMO) radar is a new radar system and draws more and more attentions in recent years. Along with the development of MIMO radar, the MIMO radar countermeasure is brought into being. Since the modulation recognition is of great significance in the electronic reconnaissance, this article presents a modulation recognition method for the signals of the emerging MIMO r...

Given the common technical assumptions in the literature on MIMO system modeling, we derive elementary results for the mutual information of a MIMO system at high SNR in the large system limit. Consider a MIMO system with R receive and φR transmit antennas. When φ < 1, removing as many receive antennas as to obtain a square system results in a mutual information loss per receive antenna that is...

Adaptive Modulation and Coding (AMC) is combined with Multiple Input Multiple Output (MIMO) multiplexing to improve the throughput performance of AMC. In addition, Selection Transmit Diversity (STD) is considered in MIMO multiplexing to achieve higher diversity gain. AMC-STD-MIMO multiplexing system is proposed. STD in our simulation selects 2 transmission antennas from 4 antennas and AMC-MIMO ...

The dramatic increase of the demand for mobile broadband services poses stringent requirements on the performance evolution of currently deployed mobile broadband networks, such as Mobile WiMAX Release 1 and 3GPP LTE Release 8. Although the combination of single-user multiple-input multiple-output (SU-MIMO) and orthogonal frequency division multiple access (OFDMA) provide the appropriate techno...

Multiple-input multiple-output (MIMO) systems have attracted lots of attentions, for their potential for high gain in channel capacity. For evaluating the performance of MIMO systems in more practical situations, more accurate channel models are necessary; and channel measurement is necessary to estimate the parameters of the channel models [1] [2]. In [2], we developed a fully parallel wideban...

A multiple-input multiple-output (MIMO) wireless transmission system with continuous phase modulation (CPM) is considered. A novel MIMO CPM receiver with incoherent modulation is presented. The incoherent demodulation of CPM allows an uncomplicated handling of a frequency offset compared to coherent approaches requiring exact knowledge of the carrier frequency. Blind signal separation (BSS) is ...

To suppress the strong interference in multiple input multiple output (MIMO) systems, an iterative receiver with a linear detector for complex symbols is investigated. We show that the considered generalized MIMO system, i.e., a system that transmits besides the pure data also complex conjugate replications, transforms the MIMO channel such that the output signal becomes rotationally variant. T...