TY - GEN
T1 - Minimising complexity in iterative multiuser detection using dynamic decoding schedules
AU - Shepherd, David P.
AU - Brännström, Fredrik
AU - Shi, Zhenning
AU - Reed, Mark C.
PY - 2006
Y1 - 2006
N2 - In this paper we utilize extrinsic information transfer (EXIT) chart analysis with unequal user power levels in a coded direct-sequence code-division multiple-access (DS-CDMA) multiuser receiver to derive a dynamic decoding schedule. Conventional receivers generally follow a static predetermined decoding schedule. However, decoding delay and complexity can be significantly reduced while maintaining BER performance through a dynamic decoding schedule optimized for a given load and transmit power configuration. Verified through simulations, we show that complexity savings of up to 50% can be achieved. We also derive the effective EXIT charts which can be used for the convergence analysis and performance predictions of unequal power CDMA systems.
AB - In this paper we utilize extrinsic information transfer (EXIT) chart analysis with unequal user power levels in a coded direct-sequence code-division multiple-access (DS-CDMA) multiuser receiver to derive a dynamic decoding schedule. Conventional receivers generally follow a static predetermined decoding schedule. However, decoding delay and complexity can be significantly reduced while maintaining BER performance through a dynamic decoding schedule optimized for a given load and transmit power configuration. Verified through simulations, we show that complexity savings of up to 50% can be achieved. We also derive the effective EXIT charts which can be used for the convergence analysis and performance predictions of unequal power CDMA systems.
UR - http://www.scopus.com/inward/record.url?scp=48749116781&partnerID=8YFLogxK
U2 - 10.1109/SPAWC.2006.346370
DO - 10.1109/SPAWC.2006.346370
M3 - Conference contribution
SN - 078039710X
SN - 9780780397101
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
BT - 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
T2 - 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Y2 - 2 July 2006 through 5 July 2006
ER -