A broadband signal model is proposed for a distributed multiple-input multiple-output (MIMO) sonar system consisting of two transmitters and a receiving linear array. Transmitters are widely separated to illuminate the different aspects of an extended target of interest. The beamforming technique is utilized at the reception ends for enhancement of weak target echoes. A MIMO detector is designe...

An energy-efficient virtual multiple-input multiple-output (MIMO) communication architecture based on V-BLAST receiver processing is proposed for energy-constrained, distributed wireless sensor networks. The proposed scheme does not require transmitter-side sensor cooperation unlike previously proposed virtual MIMO schemes for wireless sensor networks. In sensor networks with single-antenna dat...

The Multiple-Input-Multiple-Output (MIMO) technique was introduced to address the growing demand for higher data-rate applications in communication standards like 3G, WLAN, WiMAXTM. In MIMO systems, both the radio channel propagation conditions and antenna characteristics influence the end user’s quality-of-service (QoS). MIMO channel models, with the ability to simulate the multipath fading th...

An investigation into the wavelet packet transform (WPT) modulation scheme for Multiple Input Multiple Output (MIMO) band-limited systems is presented. The implementation involves using the WPT as the base multiplexing technology at baseband, instead of the traditional Fast Fourier Transform (FFT) common in Orthogonal Frequency Division Multiplexing (OFDM) systems. An investigation for a WPT-MI...

The advances in wireless technology lead to the simultaneous growth in data speed with high accuracy in the field of communication. It is well known that, meeting the increased requirements of data rate in 4G technology is a complex task. So in order to meet these requirements a Multiple-Input-Multiple-Output (MIMO) system has been developed. Also MIMO-OSTBC system helps in improving accuracy a...

In this paper, an efficient and fair algorithm for resource management in MIMO-OFDM systems is proposed. The system used for this analysis is the downlink of multi-user MIMO-OFDM system. Based on channel state information (CSI), the base station (BS) employs singular value decomposition (SVD) to transmit the MIMO channel into parallel subchannels for each subcarrier, and then subcarriers, are a...

Different interleavers are employed in Interleave Division Multiple Access (IDMA) instead of using different signatures as in a conventional code-division multiple-access (CDMA) scheme. Multiple Input Multiple Output (MIMO) system exploits multiple antennas at transmitter and receiver to mitigate the fading effect. To offer the promising communication beyond 3G and 4G wireless communication, ID...

In this paper, we propose the new technique adopting power control to MIMO(multi-input multi-output)OFDM(orthogonal frequency division multiplexing) system with multi-beamformer. Through the proposed technique, we can iteratively control the transmitting power and update the weight of beamformer simultaneously. Therefore, the beam is formed toward the desired direction and the SNIR at each subc...

In Wireless communication, it is essential to build up an efficient technique to diminish the effect of fading and Intersymbol interference occurs due to multipath propagation. By combining the multiple-input multiple-output (MIMO) with space time coded orthogonal frequency division multiplexing (OFDM), which provides large system capacity without additional power or bandwidth utilization and h...