Punctured space-time trellis codes preserving diversity gain

Chung, Jaehak; Hwang, Chan-Soo; Nam, Seunghoon; Jeong, Byung Jang

doi:10.1049/el:20030661

Cited by 6 publications

(1 citation statement)

References 2 publications

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“…Chung et al [9] have proposed a puncturing technique for space-time trellis codes with two transmit antennas and a BPSK modulation scheme. These codes achieve a higher coding rate but to maintain full diversity, the maximum frame length is limited to 16 symbols.…”

Section: B Adaptive Modulation Schemesmentioning

confidence: 99%

Adaptive Space-Time Trellis Codes Based on Convolutional Codes

Bernier¹,

Chan²

2006

IEEE Vehicular Technology Conference

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Space-time trellis codes can significantly improve the error performance or the data rate of wireless communications systems with multiple transmit antennas. These codes are usually generated using a generator matrix with 2 columns and modulo 4 operations for QPSK modulation with two transmit antennas. They can also be implemented as Z 4 convolutional codes. Another way of representing them is to use a conventional binary convolutional code of rate 2/4. Such a representation is more flexible and allows an easy implementation of space-time encoders and decoders with different modulation schemes and numbers of transmit antennas. Only the rate of the convolutional code needs to be changed using the puncturing technique to accommodate these different schemes. Simulations results have shown that the new codes can achieve an error performance very close to that of the best usual space-time codes.

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Section: B Adaptive Modulation Schemesmentioning

confidence: 99%

Adaptive Space-Time Trellis Codes Based on Convolutional Codes

Bernier¹,

Chan²

2006

IEEE Vehicular Technology Conference

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Convolutional Space-Time Codes

Bernier

Chan

2006

2006 Canadian Conference on Electrical and Computer Engineering

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Space-time codes are usually generated using a generator matrix with 2 columns and mod 4 operations for QPSK modulation with two transmit antennas. A Z4 convolutional code has also been used to represent these space-time codes.Another way of representing them is to use a conventional binary convolutional code of rate 214. The space-time code obtained in this way is in general diferent from the usual space-time codes. Simulations results have shown that the new codes can achieve an error performance very close to that of the best usual space-time codes and even outperform them.Furthermore, such a representation is moreflexible and allows an easy implementation of space-time encoders and decoders for different numbers oftransmit antennas. Only the rate ofthe convolutional code needs to be changed using the puncturing technique to accommodate these diferent schemes.

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Punctured Space-Time Convolutional Codes for Adaptive Modulation Schemes

Bernier

Chan

2007

MILCOM 2007 - IEEE Military Communications Conference

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Punctured space-time trellis codes preserving diversity gain

Cited by 6 publications

References 2 publications

Adaptive Space-Time Trellis Codes Based on Convolutional Codes

Adaptive Space-Time Trellis Codes Based on Convolutional Codes

Convolutional Space-Time Codes

Punctured Space-Time Convolutional Codes for Adaptive Modulation Schemes

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