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Subcarrier mapping (SCM) is an efficient way to evidently improve the average end-to-end capacity in cooperative OFDM networks. However perfect channel knowledge is required, which leads to large feedback amount of channel state information (CSI). In this paper, the uplink scenario of multi-relay OFDM cooperative networks with subcarrier mapping scheme is(More)
Cooperative communication is an efficient solution to combat wireless channel fading and to increase system throughput in future board communication. In this paper, we consider the uplink scenario of multi-user cooperative network, in which the resource is allocated to the users with the consideration of both fairness guarantee and throughput enhancement.(More)
In cooperative OFDM networks, ordered subcarrier pairing (OSP) at the relay has been shown to improve the average end-to-end capacity evidently. In this paper, the statistical performance evaluations are provide for two-hop OFDM relay link with both amplify-and-forward (AF) and decode-and-forward (DF) protocol. First, closed-form expressions are derived for(More)
Breast cancer is the most common malignancy among females throughout the world. Current treatments have unsatisfactory outcomes due to the dispersed nature of certain types of the disease. The development of a more effective therapy for breast cancer has long been one of the most elusive goals of cancer gene therapy. In the present study, human mesenchymal(More)
—Cooperative diversity techniques have the huge potential capability on combining the time and space diversity gain of multiple antennas and the opportunistic scheduling gains. In this paper, we investigate suboptimal opportunistic cooperative scheme strategies for the edge-user based on low complexity equal power transfer and equal gain receive combine.(More)
The orthogonal random beamforming is a practical scheme to increase the throughput of the MIMO system significantly. But the fairness allover the subscribers is the weak point. In this paper, the proportional fair scheduling scheme is introduced to the ORBF scheme for the multi-user MIMO systems and two adaptive proportional fair scheduling schemes are(More)
Recently, Paterson and Schuldt proposed an Identity-based (ID-based) signature scheme which is provably secure in the absence of random oracles. In this paper, we propose an ID-based threshold signature scheme based on their signature scheme. The proposed construction is proved secure in the standard model and its security rests on the hardness of discrete(More)
In this paper we present two strategy to maximize user's throughput in Cooperative MU-OFDM network while considering fairness of users. Our strategy is proposed to improve throughput and fairness of users only with limited feedback. With perfect instantaneous channel state information(CSI) at receiver, the resource allocating strategy not only decided in(More)
— A space-time coding scheme based on Interleave Division Multiplexing (IDM) is investigated over an Orthogonal Frequency Division Multiplexing (OFDM) link that employs multiple transmit antennas. The performance of an iterative receiver structure for the proposed scheme over a quasi-static channel is evaluated via simulation, and its advantages are shown(More)