Title :
A Markov based method for modulation and coding scheme (MCS) with hybrid ARQ retransmission
Author :
Chen, Fan ; Lijun, Su ; Meiya, Chen ; Dacheng, Yang
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
A Markov based method for modulation and coding scheme (MCS) selection is proposed for pilot assistant adaptive modulation and coding scheme (AMC) with hybrid ARQ (HARQ) retransmissions. A first-order finite-state Markov model (FSMM) is introduced to represent the time correlation character of channel fading during (channel quality indicator) CQI feedback and HARQ retransmissions. According to different QoS targets, such as maximizing the air interface throughput or maintaining a target frame error rate (FER) for each user, the Markov based method can deduce different reference pilot thresholds for each MCS. Theoretical analysis and link level simulation results both show the efficiency of the Markov based method for pilot threshold calculation according to different QoS target and different HARQ retransmission times
Keywords :
Markov processes; adaptive codes; adaptive modulation; automatic repeat request; error statistics; fading channels; quality of service; CQI feedback; Markov based method; QoS target; air interface throughput; channel fading; channel quality indicator feedback; first-order finite-state Markov model; hybrid ARQ retransmission; link level simulation; pilot assistant adaptive modulation-and-coding scheme; reference pilot threshold calculation; target frame error rate; time correlation character; Analytical models; Automatic repeat request; Delay; Downlink; Error analysis; Fading; Feedback; Modulation coding; Multiaccess communication; Throughput; Adaptive modulation and coding; HSDPA; Hybrid ARQ; Markov model;
Conference_Titel :
Wireless and Optical Communications Networks, 2006 IFIP International Conference on
Conference_Location :
Bangalore
Print_ISBN :
1-4244-0340-5
DOI :
10.1109/WOCN.2006.1666580
