With the increase in the multimedia applications that requires the high speed, high data rate in real time basis, and continuous connectivity supporting mobility. In order to facilitate effective ubiquitous or pervasive computing, stress the need for efficient utilization of the LTE characteristic. For efficient utilization of the characteristic needs focus on the maximum usability of the resource allocated. Various challenges in a different scheme of resource allocation such as downlink, uplink, and radio resources allocation is thoroughly analyzed. This paper extensively focuses basic of resource allocation, and concentrates on different kinds of issues faced by various resource allocation schemes and aims at fulfilling the needs of students, academician as well as industry in the particular aspect.
Nowadays many organizations are maintaining computer based information systems. These information systems are valuable assets to the organization. Most of the business information or corporate decisions are buried across the systems in the organization and due to the need based modifications sometimes the attributes are scattered throughout the program and even there is a redundancy in the stored data. These business information and corporate decisions represents the business rules of the organization and they are in the form of functional dependencies. These functional dependencies are unevenly scattered and sometimes redundant too. In a database, the records containing these unevenly scattered functional dependencies may be distributed throughout the database, leading to anomalies. This paper proposes a methodology for the minimization of the functional dependencies available either in a program code or in a database using the minimal cover process. By minimizing these functional dependencies, the redundant and irrelevant attributes are removed and the structure of the application program is kept intact in the maintenance phase.
The growing interest towards wireless communication advancement with smart devices has provided the desired throughput of wireless communication mechanisms. But, attaining high-speed data packets amenities is the biggest issue in different multimedia applications. Recently, OFDM has come up with the useful features for wireless communication however it faces interference issues at carrier level (intercarrier interferences). To resolve these interference issues in OFDM, various existing mechanisms were utilized cyclic prefix, but it leads to redundancy in transmitted data. Also, the transmission of this redundant data can take some more power and bandwidth. All these limitations factors can be removed from a parallel cancellation mechanism. The integration of parallel cancellation and Convolution Viterbi encoding and decoding in MIMO-OFDMA will be an effective solution to have high data rate which also associations with the benefits of both the architectures of MIMO and OFDMA modulation approaches. This paper deals with this integrated mechanism for efficient resource allocation and power consumption. For performance analysis, MIMO-OFDMA system is analyzed with three different approaches likeMIMO-OFDM system without parallel cancellation (MIMO-OFDMA-WPC), MIMO-OFDMA System with parallel cancellation (MIMO-OFDMA-PC) and proposed IMO-OFDMA system with parallel cancellation and Convolution Viterbi encoding/decoding (pMIMO-OFDMA-PC &CVed) for 4x4 transmitter and receiver. Through performance analysis, it is found that the proposed system achieved better resource allocation (bandwidth) with high data rate by minimized BER rate and achieved least power consumption with least BER.
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