TY - GEN
T1 - Combining orthogonalized partial metrics
T2 - 2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
AU - Liao, Chun Hao
AU - Lai, I. Wei
AU - Nikitopoulos, Konstantinos
AU - Borlenghi, Filippo
AU - Kammler, David
AU - Witte, Martin
AU - Zhang, Dan
AU - Chiueh, Tzi Dar
AU - Ascheid, Gerd
AU - Meyr, Heinrich
PY - 2009
Y1 - 2009
N2 - Using the Schnorr-Euchner (SE) order for soft-input sphere decoders is inefficient for implementation, because it requires exhaustive calculation and sorting of partial metrics of all constellation points. Instead, low-complexity methods can be applied by separating the partial metric into channel information and a priori information and solely enumerating based on one of them. With such an orthogonalization, this paper presents an algorithm that effectively combines these two enumerations to deliver an order close to the SE one. Mathematical analyses and simulation results demonstrate that this is the first algorithm allowing for a low-complexity implementation with optimal error rate performance for any number of iterations.
AB - Using the Schnorr-Euchner (SE) order for soft-input sphere decoders is inefficient for implementation, because it requires exhaustive calculation and sorting of partial metrics of all constellation points. Instead, low-complexity methods can be applied by separating the partial metric into channel information and a priori information and solely enumerating based on one of them. With such an orthogonalization, this paper presents an algorithm that effectively combines these two enumerations to deliver an order close to the SE one. Mathematical analyses and simulation results demonstrate that this is the first algorithm allowing for a low-complexity implementation with optimal error rate performance for any number of iterations.
UR - http://www.scopus.com/inward/record.url?scp=77952810207&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77952810207&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2009.5450104
DO - 10.1109/PIMRC.2009.5450104
M3 - Conference contribution
AN - SCOPUS:77952810207
SN - 9781424451234
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 1287
EP - 1291
BT - 2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 13 September 2009 through 16 September 2009
ER -