Spread spectrum techniques have been used for many cellular communication systems, and are being adopted widely for military communication networks. The motivation for employing this technique is its ability to suppress fading due to multipath propagation. In this paper, receivers based on chip level equalization are considered for a downlink code division multiple access (CDMA) system employin...

Digital Devices or Electric and Electronic Equipment (EEE) are scrapped at an alarming rate instead of being salvaged, fixed, and reused. For the reuse sector to flourish, donors, receivers, and reuse centers need services and technologies to gain effectiveness, efficiency, and traceability to reach the goal of greatly extending the lifetime of devices and still ensuring their final recycling. ...

In this paper, the error performance achieved by cooperative detection among K distributed receivers in a diffusionbased molecular communication (MC) system is analyzed and optimized. In this system, the receivers first make local hard decisions on the transmitted symbol and then report these decisions to a fusion center (FC). The FC combines the local hard decisions to make a global decision u...

Photon counting detector arrays are commonly used for deep space optical communication receivers operating on the principle of intensity modulation/direct detection (IM/DD). In scenarios where beam parameters can vary at receiver due to scattering, it is important estimate in order minimize probability error. The use array detectors increases sensitivity as compared single photo-detector same s...

Several types of ASK multiport homodyne receivers are investigated, and the impact of the phase noise and of the shot noise on these receivers is analyzed. The simplest structure is the conventional multiport receiver with a matched filter in each branch. This structure can tolerate AvT (Av is the laser linewidth and T is the bit duration) of several percent with a small power penalty (3.6 perc...

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Multiuser demodulation algorithms for centralized receivers of asynchronous direct-sequence (DS) spread-spectrum code-division multiple-access (CDMA) systems in frequency-selective fading channels are studied. Both DS-CDMA systems with short (one symbol interval) and long (several symbol intervals) spreading sequences are considered. Linear multiuser receivers process ideally the complete recei...

Abstract The monitoring of bridges is a crucial operation for their structural health examination and maintenance. GNSS technology one the methods which are applied with main advantage that direct measurement bridge displacement conducted in an independent global coordinate system. However, high cost stations, consisted dual-frequency receivers geodetic antennas, reason limited application moni...

Detection and localization of stationary and moving targets within a building or an enclosed structure are highly desirable in through-the-wall radar imaging (TWRI) and urban sensing applications. These objectives are primarily challenged by two factors. First, multipath propagation of the electromagnetic waves gives rise to ghost targets [1]. Second, the need for highly resolved images results...

The iterative receivers with LSD and PIC on slow Rayleigh fading MIMO channels are considered. The convergence behavior of the iterative detection and decoding is analyzed via VTR. We present an iterative receiver with detection switching and show that this scheme is able to considerably reduce the complexity of receiver without performance degradation.