Najib A. Odhah

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Multi-User Orthogonal Frequency Division Multiplexing (MU-OFDM) is an efficient technique for achieving high downlink capacity in high-speed communication systems. A key issue in MU-OFDM is the allocation of the OFDM subcarriers and power to users sharing the channel. In this paper a proportional rate-adaptive resource allocation algorithm for MU-OFDM is(More)
Radio resource allocation to the system users is the key challenge issue in multiuser orthogonal frequency division multiplexing (MU-OFDM) systems. In this paper, an efficient and low-complexity proportional rate-adaptive radio resource (sub-carrier and power) N. A. Odhah Department of Electronics Engineering, Faculty of Engineering, and Architecture, Ibb(More)
In this paper, an enhanced greedy bit and power allocation algorithms for orthogonal frequency division multiplexing (OFDM) communication systems are introduced. These algorithms combine low complexity greedy power allocation algorithms with a simplified maximum ratio combining (MRC) precoding technique at the transmitter for maximizing the average data(More)
In this paper, an improved transmission scheme for high speed communication systems is introduced. This scheme combines a low complexity discrete bit loading algorithm with a simplified Maximum Ratio Combining (MRC) pre-equalization scheme at the transmitter for maximizing the data throughput of Orthogonal Frequency Division Multiplexing (OFDM) systems.(More)
In this paper, frequency domain pre-equalization (Pre-FDE) is developed for broadband cyclic prefix-code division multiple access (CP-CDMA) as a single carrier transmission scheme, and for multi carrier-CDMA (MCCDMA) and orthogonal frequency division multiplexing (OFDM) as multi carrier transmission schemes. A comparison study is held between these schemes(More)
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