Download Multi-Carrier Techniques For Broadband Wireless by Man-On Pun, Michele Morelli, C-C Jay Kuo PDF

By Man-On Pun, Michele Morelli, C-C Jay Kuo

Multi-Carrier innovations for Broadband instant Communications offers an obtainable advent to Ofdm-based structures from a sign processing viewpoint. the 1st half provides a concise remedy of a few primary options regarding instant communications and multicarrier structures, whereas the second one deals a finished survey of modern advancements on numerous serious layout concerns. those comprise synchronization options, channel estimation tools, adaptive source allocation and sensible schemes for decreasing the peak-to-average energy ratio of the transmitted waveform.

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Extra info for Multi-Carrier Techniques For Broadband Wireless Communications: A Signal Processing Perspective (Communications and Signal Processing)

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The performance of the equalizer is usually given in terms of the output MSE. 14 illustrates the impact of the equalizer length M on the output MSE as obtained through Monte-Carlo simulations. These results indicate that efficient ISI compensation requires an equalizer with at least 70 weighting coefficients. A longer filter is necessary if the propagation channel comprises more multipath components with larger path delays, thereby increasing the complexity of the receiving terminal. This is clearly undesirable since mobile receivers have usually limited computational resources and strict power constraints.

A classical model to statistically characterize the multiplicative distortion induced by time-selective fading is due to Jakes [64]. This model applies to a scenario similar to that illustrated in Fig. 10, where an omni-directional antenna receives a large number of multipath contributions in the horizontal plane from uniformly distributed scatterers. V 27 . 69 Fig. 10 o A typical scenario for application of the Jakes model. 34) where J0 (x) is the zeroth-order Bessel function of the first kind while fD,max denotes the maximum Doppler shift.

0 h(1)  .   ··· ··· ··· ··· 0  .. . . .   . . . 46) The second term in the right-hand-side of Eq. 44) is the IBI contribution, which is eliminated after discarding the CP. 47) where Bc = R(cp) B (l) T (cp) is an N ×N circulant matrix whose first column T is hT 0TN −L . Vector ri is serial-to-parallel converted and fed to the receive DFT unit. This produces Ri =c F B c F H ci . 49) June 15, 2007 10:2 42 World Scientific Book - 9in x 6in book Multi-Carrier Techniques for Broadband Wireless Communications where DH is a diagonal matrix with H = Hence, we may rewrite the DFT output as √ N F h on its main diagonal.

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