Trellis coding for diagonally layered space-time systems

Matache, A.; Wesel, Richard D.; Shi, Jun

doi:10.1109/acssc.2001.987652

Cited by 3 publications

(4 citation statements)

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“…In this paper, we extend our results in [5] and examine the performance of universal trellis codes for the periodic fading channel in conjunction with full-overhead and reduced-overhead versions of the diagonally layered space-time receiver Manuscript received December 12, 2002; revised June 3, 2003. This work was supported by the National Science Foundation under Award CCR-0209110 and a gift from Lucent Technologies.…”

Section: Introductionmentioning

confidence: 80%

“…An additional loss of 0.6-1.0 dB is incurred due to the overhead penalty associated with the diagonal layering. At about the same time as our initial results in [5], Caire and Colavolpe [7] proposed a similar space-time coding technique for the quasistatic multiple antenna channel, called the "wrapped" space-time coding (WSTC) scheme. The main difference in this work is that the decoding of a "wrapped" space-time code is via Viterbi's algorithm through the use of per-survivor processing (PSP) and that the component codes for the WSTC scheme are off-the-shelf convolutional codes, which are not designed for the periodic channel created by D-BLAST.…”

Section: Introductionmentioning

confidence: 95%

“…The above expression can be further simplified to obtain (4) where and are the projection of and , respectively, onto the nullspace of . Using standard maximum ratio combining, the decision on the th component of is given by (5) It can be shown that the mean squared error (MSE) between and is given by…”

Section: A Zf Interference Suppressionmentioning

confidence: 99%

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Universal trellis codes for diagonally layered space-time systems

Matache¹,

Wesel²

2003

IEEE Trans. Signal Process.

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Foschini's diagonally layered space-time transmission system known as D-BLAST is an architecture designed for a Rayleigh fading environment using multiple element antenna arrays at both the transmit and receive sites to achieve very high spectral efficiencies. In this paper, we propose a simple coding technique for D-BLAST that uses a single trellis code with finite-traceback Viterbi decoding. We examine the performance of universal trellis codes that are designed to have a distance structure that is matched to the periodic signal-to-noise ratio (SNR) variation of the channel created by D-BLAST, under the assumption that the channel is static during one burst but may change from burst to burst. We show that a universal 64-state trellis code on a 2 2 D-BLAST system with long enough blocklengths displays universal behavior working on almost every 2 2 channel with at least the mutual information required by a standard 64-state AWGN trellis code. The only 2 2 channel where more mutual information is required is a certain rotation of the zero eigenvalue channel. We also presnt 4 4 and 8 8 examples.

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Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 95%

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Universal trellis codes for diagonally layered space-time systems

Matache¹,

Wesel²

2003

IEEE Trans. Signal Process.

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“…layered space-time architecture (D-BLAST). Recent work includes the trellis coded D-BLAST[48] and wrapped space-time coding[49]. Most of existing work, designed for the case when the number of receive antennas N ≥ M, relies on the diagonal structure to perform a simple ZF or MMSE decision-feedback detection coupled with constituent decoder at the receiver.…”

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confidence: 99%