TY - GEN
T1 - A game theoretical model for signature selection in non-cooperative IrLDS-OFDMA system
AU - Zhao, Lu
AU - Ye, Neng
AU - Yang, Kai
AU - Bu, Xiangyuan
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/19
Y1 - 2017/12/19
N2 - In irregular low density signature-orthogonal frequency division multiplexing (IrLDS-OFDM) random access system, since no uplink scheduling is performed, each user randomly picks one low density signature (LDS) with different density factor, and spreads the symbols with LDS in the time-frequency domain. In this paper, we propose a game theoretical model to describe this non-cooperative uplink multiple access. Specifically, the original multi-action game is decomposed into several degraded games for simplification. The strategies which achieve Nash equilibrium in the degraded games are then combined with certain rules, and as a result, a SNR threshold based density factor selection method is derived to achieve the Nash equilibrium. Simulations show that the proposed method can achieve better throughput than random signature selection.
AB - In irregular low density signature-orthogonal frequency division multiplexing (IrLDS-OFDM) random access system, since no uplink scheduling is performed, each user randomly picks one low density signature (LDS) with different density factor, and spreads the symbols with LDS in the time-frequency domain. In this paper, we propose a game theoretical model to describe this non-cooperative uplink multiple access. Specifically, the original multi-action game is decomposed into several degraded games for simplification. The strategies which achieve Nash equilibrium in the degraded games are then combined with certain rules, and as a result, a SNR threshold based density factor selection method is derived to achieve the Nash equilibrium. Simulations show that the proposed method can achieve better throughput than random signature selection.
KW - Game model
KW - Irregular low density signature
KW - Random access
UR - http://www.scopus.com/inward/record.url?scp=85044190445&partnerID=8YFLogxK
U2 - 10.1109/SPAWC.2017.8227781
DO - 10.1109/SPAWC.2017.8227781
M3 - Conference contribution
AN - SCOPUS:85044190445
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
SP - 1
EP - 5
BT - 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
Y2 - 3 July 2017 through 6 July 2017
ER -