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LTI Transceivers With Reduced Redundancy

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This paper presents new linear time-invariant (LTI) block-based transceivers which employ a reduced amount of redundancy to eliminate the interblock interference. The proposals encompass both multicarrier and single-carrier systems with either zero-forcing or minimum mean-square error (MSE) equalizers. The amount of redundancy ranges from the minimum, $lceil{Lover 2}rceil$, to the most commonly used value, $L$, assuming a channel-impulse response of order $L$. The resulting transceivers allow for superfast equalization of the received data blocks, since they only use fast Fourier transforms and single-tap equalizers in their structures. The paper also includes an MSE analysis of the proposed transceivers with respect to the amount of redundancy. Indeed, we demonstrate that larger amounts of transmitted redundant elements lead to lower MSE of symbols at the receiver end. Computer simulations indicate that, by choosing an appropriate amount of redundancy, our proposals can achieve higher throughputs than the standard superfast multicarrier and single-carrier systems, while keeping the same asymptotic computational complexity for the equalization process.

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LTI Transceivers With Reduced Redundancy - 4.8 out of 5 based on 72 votes

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