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We derive in this paper tight exponential upper bounds on the decoding error probability of block codes which are operating over fully interleaved Rician fading channels, coherently detected and maximum-likelihood decoded. It is assumed that the fading samples are statistically independent and that perfect estimates of these samples are provided to the decoder. These upper bounds on the bit and block error probabilities are based on certain variations of the Gallager bounds. These bounds do not require integration in their final version and they are reasonably fight in a certain portion of the rate region exceeding the cutoff rate of the channel. By inserting interconnections between these bounds, we show that they are generalized versions of some reported bounds for the binary-input additive white Gaussian noise channel. [ABSTRACT FROM AUTHOR]

Introduces a class of binary labelings for signal constellations for which the uniform bit error property (UBEP) holds. Discussion of UBEP and geometrical uniformity; Information on the binary labelings and the UBEP; Introduction of bit geometrical uniform labelings.

Introduces a series of articles on turbo-decoding algorithm.

Examines the density of extrinsic information in iterative turbo decoders by actual density evolution. Approximation of the decoders by symmetric Gaussian density functions; Verification of the approximation model; Evolution of the density functions as a nonlinear dynamical system with feedback.

Introduces an improved nonlinear parallel interference cancellation scheme for code-division multiple access (CDMA) that significantly reduces the degrading effect on the desired user of interference form the other users that share the channel. Multiuser communication system model; Derivation of the parallel iterated multiuser detector; Analysis of the performance of a single-stage interference; Conclusions.

Evaluates several problems involving Gaussian probability integral. Error probability performance of uncoded PSK with costas loop tracking; Word-error probability performance of binary antipodal modulation with independent Rayleigh fading amplitudes which is known as channel-state information; Conditional symbol error probability of M-ary phase-shift keying (MPSK) in the presence of carrier synchronization error.

Provides information on the construction of serial concatenated codes. Discussion on error probability of serially concatenated block and convolutional coding schemes; Details on the design guidelines for the outer and inner encoders that maximize the interleaver gain and the asymptotic slope of error probability curves; Comparison of turbo codes.

In the last decade, great progress was made in the development of small satellites and CubeSats. Several small spacecraft were designed, fabricated, launched, and successfully operated in low Earth orbit. While more companies and space agencies are becoming interested in CubeSats and small satellite, also the mission goals for these spacecraft are gradually changing: these small spacecraft are starting to be considered for deep-space, interplanetary exploration. Given the limited size, mass and power capabilities of these small platforms, one of the most interesting problems to address is how to develop a communication system to allow small satellites to communicate from very far distance in the solar system. This paper aims to address this problem by proposing cooperative communication approaches in which multiple CubeSats communicate cooperatively together to improve the link performance with respect to the case of a single satellite transmitting. Three approaches are proposed: a beam-forming approach, a coding approach, and a network approach. The approaches are applied to the specific case of the SOLARA/SARA concept: a proposed constellation of CubeSats at the Lunar Lagrangian point L1 which aims to perform radio astronomy at very low frequencies (30 kHz to 3 MHz). The paper describes the development of the approaches, the simulation and a graphical user interface developed in Matlab which allows to perform trade-offs across multiple constellation׳s configurations. [ABSTRACT FROM AUTHOR]