TY - GEN
T1 - Channel tracking for D-BLAST for airborne platforms
AU - Borle, Kapil
AU - Chen, Biao
AU - Gans, M. J.
PY - 2011
Y1 - 2011
N2 - Coherent symbol detection requires knowledge of channel state information. The traditional use of embedding pilot symbols with payload data may not be easy to justify if channel variation is fast and/or the data rate requirement is high. We consider the implementation of the D-BLAST algorithm for airborne platforms and develop channel tracking schemes that eliminate or reduce the use of pilot symbols. In a normal operation mode, channel update is achieved dynamically as each layer of the D-Blast, encoded using an LDPC code, is decoded. We find the optimal symbol length to estimate a SISO channel under the Rayleigh channel model and then generalize it to the MIMO case. To ensure that the transceiver can detect outage due to the loss of channel state, an adaptive algorithm is devised utilizing the extremal property of the terminating likelihood ratio of an LDPC decoder.
AB - Coherent symbol detection requires knowledge of channel state information. The traditional use of embedding pilot symbols with payload data may not be easy to justify if channel variation is fast and/or the data rate requirement is high. We consider the implementation of the D-BLAST algorithm for airborne platforms and develop channel tracking schemes that eliminate or reduce the use of pilot symbols. In a normal operation mode, channel update is achieved dynamically as each layer of the D-Blast, encoded using an LDPC code, is decoded. We find the optimal symbol length to estimate a SISO channel under the Rayleigh channel model and then generalize it to the MIMO case. To ensure that the transceiver can detect outage due to the loss of channel state, an adaptive algorithm is devised utilizing the extremal property of the terminating likelihood ratio of an LDPC decoder.
UR - http://www.scopus.com/inward/record.url?scp=84861321752&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861321752&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2011.6190223
DO - 10.1109/ACSSC.2011.6190223
M3 - Conference contribution
AN - SCOPUS:84861321752
SN - 9781467303231
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1283
EP - 1287
BT - Conference Record of the 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
T2 - 45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011
Y2 - 6 November 2011 through 9 November 2011
ER -