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The set of programs that simulate the LDPC-coded multicarrier transmissions (MC) is composed of two programs:-MP_SimSU employed for the performance evaluation of LDPC-MC for a point-to-point or a single user connection;-MP_siteSim intended for the performance evaluation of a multiuser downlink connection in a mobile environment. MP_SimSU The MP_SimSU(More)
—Cooperative hybrid ARQ (HARQ) protocols have been widely studied in recent years and they were shown to provide higher efficiency than cooperative protocols. This paper proposes a joint design within which the HARQ protocol collaborates with the link adaptation functionality and the cooperative transmission scheme in order to adapt the behavior of the HARQ(More)
This paper proposes a practical approach to load balancing in heterogeneous wireless networks, which is based on the adaptation of the multiple knapsack problem to this specific scenario. Several algorithms capable of solving the knapsack problem are considered, namely a brute force, a dynamic programming and a greedy approach. The algorithms are evaluated(More)
In this paper, we propose a method to predict the block error rate performance of the wireless links in OFDM communication systems. Our approach relies on a performance prediction methodology that uses the mean mutual information per coded bit as quality measure. We make a simplification within this methodology such that, contrary to existing approaches,(More)
This paper analyzes the block error rate (BLER) performance provided by a virtual MIMO scheme which implements a modified Alamouti Space-Frequency Block Code (SFBC) encoding-decoding algorithm using two fixed Decode & Forward relays that perform selective relaying, and single-antenna devices. It also analyzes the performance of the classical relay-based(More)
Nowadays the Always Best Connected paradigm becomes more and more important, but fulfilling the requirements of this paradigm is not an easy task. Providing ubiquitous connectivity in the particular case of intelligent transportation systems requires, in most of the cases, the joint usage of the transmission capacities offered by several wireless access(More)
The increased demand of low-latency and spectrally efficient wireless transmissions requires accurate performance prediction mechanisms. A widely used performance prediction method for coded multicarrier transmissions applying iteratively decoded error correction codes is based on the employment of the mean mutual information of the coded bit. A precise(More)