Tao Jiang, Lingyang Song, Yan Zhang's Orthogonal Frequency Division Multiple Access Fundamentals PDF

By Tao Jiang, Lingyang Song, Yan Zhang

ISBN-10: 1420088246

ISBN-13: 9781420088243

Supported by way of the expert-level suggestion of pioneering researchers, Orthogonal Frequency department a number of entry basics and Applications offers a accomplished and available advent to the principles and functions of 1 of the main promising entry applied sciences for present and destiny instant networks. It comprises authoritative insurance of the heritage, basic ideas, key options, and demanding layout problems with OFDM platforms.

Covering a variety of strategies of powerful source administration for OFDM/OFDMA-based instant communique structures, this state of the art reference:

  • Addresses open difficulties and provides attainable solutions
  • Provides a concise evaluate of key innovations for adaptive modulation
  • Investigates radio channel modeling in OFDMA-based instant conversation systems
  • Details detection innovations of frequency-domain equalization for broadband communications
  • Introduces a singular blend of OFDM and the orbital angular momentum of the electromagnetic box to enhance functionality
  • Contains huge therapy of adaptive MIMO beamforming compatible for multiuser access

This helpful source provides readers with a macro-level figuring out of OFDMA and its key matters, whereas supplying a scientific handbook for these whose paintings is without delay on the topic of useful OFDMA and different multiuser verbal exchange platforms initiatives.

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Additional info for Orthogonal Frequency Division Multiple Access Fundamentals and Applications

Example text

1) k=0 where h(τ, t) represents the response of the channel at time t to an impulse input at time t − τ. This representation employs “discrete impulses” via the Dirac deltas, which implies that the channel imposes specific discrete attenuations, phase shifts, and delays upon any signal transmitted. This approximation is very good for signal bandwidths of tens of MHz or more [14]. 1 is the amplitude of the kth resolved component, the argument of the exponential φk (t) is the kth resolved phase, and τk is the delay of the kth path.

This approximation is very good for signal bandwidths of tens of MHz or more [14]. 1 is the amplitude of the kth resolved component, the argument of the exponential φk (t) is the kth resolved phase, and τk is the delay of the kth path. The radian carrier frequency is ωc , and the kth resolved Doppler frequency is ωD,k (t) = 2πv(t)fc cos[θk (t)]/c, with v(t) the relative velocity between Tx and Rx, θk (t) the aggregate phase angle of all components arriving in the kth delay “bin," c the speed of light, and fc = ωc /(2π) the carrier frequency in Hz.

For the most accurate communication system performance evaluation, we have found that employing MPC persistence does indeed matter. 16e OFDMA systems in vehicle-to-vehicle channels, not incorporating this effect can yield BER estimates that are optimistic by 1/2 to 1 order of magnitude [52]. , from urban to suburban) [10]. 4 Extensions to MIMO and MB Models The use of MIMO techniques for communication system performance enhancement has received much attention in the literature [53,54]. These techniques can increase link capacity, increase data throughput, and improve BER performance [55].

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Orthogonal Frequency Division Multiple Access Fundamentals and Applications by Tao Jiang, Lingyang Song, Yan Zhang


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