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The effective rate is an important metric that takes delay quality of service (QoS) requirements into consideration while analyzing the performance of wireless systems. In this paper we analyze the effective rate of multiple-input single-output (MISO) systems with transmit antenna selection (TAS) subject to Rayleigh fading. Specifically, we derive an analytical expression for the effective rate of...
The IEEE 802.15.7 standard for visible light communication (VLC) includes the use of run-length-limited codes to mitigate modulation-induced flickering and the further use of coding to improve bit error rate performance. In this paper, we introduce algorithms to design codes using finite-state machines, which provide simultaneously a coding gain while also mitigating flicker. The codes have the additional...
We analyze the asymptotic average throughput of a multiuser diversity (MD) scheme, in the limit of large number of users, for free space optical (FSO) communication systems over a gamma-gamma fading channel. It is assumed that the FSO system consists of an optical transmitter (central node) equipped with K transmit apertures to serve K users (one transmit aperture for each user). It is also assumed...
Abstract-The IEEE 802.15.7 standard on visible light communications (VLC) proposes color-shift-keying (CSK) as a way to increase data rate while keeping a constant optical power. In this paper, we propose two algorithms to design codes by finite state machines (FSM) using newly introduced CSK constellations. These codes ensure a constant perceived color eliminating the use of the scrambler proposed...
A new method to detect binary optical homodyne amplitude shift keying (ASK) signals in the presence of laser phase noise and receiver shot noise is presented. This method is rely on an efficient least square (LS) algorithm to mitigate the negative effects of phase noise error. The error rate performance of non-ideal ASK system is investigated under LS detection and the signal-to-noise ratio (SNR)...
In this paper we derived the probability density function of the product of independent non-identically distributed Weibull RVs. The derivation is based on the use of the Mellin transformation along with the Residue theorem to evaluate the attained complex integral. The resultant integrands have only elementary functions, such as exponentials and algebraic power functions and can, therefore, be explicitly...
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