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The Interleaved Frequency Division Multiple Ac-
cess (IFDMA) scheme is based on compression, repetition and
subsequent user dependent frequency shift of a modulated signal.
Multiple access is enabled by the assignment of overlapping but
mutua
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OFDMA, Orthogonal Frequency Division Multiple Access is a broad band communication method. Here channel estimation is more crucial. Based on the FFT size used for OFDM transmission method that many number of channel co-efficients are to be estimated
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Abstract—In this paper we present an initial performance
evaluation of the 3GPP UTRA Long Term Evolution (UTRA
LTE) uplink with baseline settings. The performance results
are obtained from a detailed UTRA LTE uplink link level
simulator suppo
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SIC for OFDMA. The file has a figure for showing the effect of Successive interference canceller in an OFDMA system for an uplink transmission with 4 users transmitting in blocks of 4 subcarriers towards the base station.
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Matlab Simulink 2012a
Model shows how this complex OFDMA technique works on the simple Uplink example.
Model consists of two users (transmitters) who send bursts of data to a base station (receiver). Channel is clear, and no correction coding i
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Abstract—This paper evaluates a novel mapping and scheduling scheme which allows efficient control over the quality-of-service (QoS) experienced by long term evolution (LTE) users when backhauled over an orthogonal frequency division multiple access–
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CDMA and OFDMA are the multiple access techniques for the next generation wireless communication systems. In 3G systems CDMA is used and in 4G OFDMA technique is used. Recently in 3G systems Wideband Code Division Multiple Access (WCDMA) is used beca
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To fully exploit wireless radio resource and, thus,
increase spectrum efficiency, cognitive radios shall sense wire-
less environments and identify interference to allow opportunis-
tic transmissions for secondary systems. Based on Chen et al.
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Matlab code which implements MB-OFDM transmission block as per ECMA 368 standard.
OFDM over frequency selective wireless channels
simulation code for Peak-to-Average Power Ratio (PAPR) reduction in MIMO OFDM/A system using CMA
This is an OFDM s
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