TY - GEN
T1 - Time-invariant rateless codes for MIMO channels
AU - Shanechi, Maryam Modir
AU - Erez, Uri
AU - Wornell, Gregory W.
AU - Boyle, Kevin P.
PY - 2008
Y1 - 2008
N2 - Two time-invariant rateless code constructions are developed for efficient communication over multi-input multioutput (MIMO) Gaussian channels. Both architectures employ layering, dithering, and repetition as key ingredients, and convert the MIMO channel into a scalar channel to which classical Gaussian base codes can be applied. Both constructions are convolutionally structured-one is based on faster-than-Nyquist (ftN) signaling, while the other on a diagonal layering (DL) structure. Moreover, both employ successive cancellation decoding. We show that ftN rateless codes are asymptotically capacity achieving at any signal-to-noise ratio (SNR) and induce a time-invariant scalar channel. We also show that DL codes are capacity achieving at any SNR, and induce a particular time-varying scalar channel to which standard LDPC base codes can be applied without significantly sacrificing performance.
AB - Two time-invariant rateless code constructions are developed for efficient communication over multi-input multioutput (MIMO) Gaussian channels. Both architectures employ layering, dithering, and repetition as key ingredients, and convert the MIMO channel into a scalar channel to which classical Gaussian base codes can be applied. Both constructions are convolutionally structured-one is based on faster-than-Nyquist (ftN) signaling, while the other on a diagonal layering (DL) structure. Moreover, both employ successive cancellation decoding. We show that ftN rateless codes are asymptotically capacity achieving at any signal-to-noise ratio (SNR) and induce a time-invariant scalar channel. We also show that DL codes are capacity achieving at any SNR, and induce a particular time-varying scalar channel to which standard LDPC base codes can be applied without significantly sacrificing performance.
UR - http://www.scopus.com/inward/record.url?scp=52349084968&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2008.4595390
DO - 10.1109/ISIT.2008.4595390
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AN - SCOPUS:52349084968
SN - 9781424422579
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2247
EP - 2251
BT - Proceedings - 2008 IEEE International Symposium on Information Theory, ISIT 2008
T2 - 2008 IEEE International Symposium on Information Theory, ISIT 2008
Y2 - 6 July 2008 through 11 July 2008
ER -