A 19-mode 8.29mm2 52-mW LDPC Decoder Chipp for IEEE 802.16e System

This paper presents a LDPC decoder chip supporting all 19 modes in IEEE 802.16e system. An efficient design strategy is proposed to reduce 31.25% decoding latency, and enhance hardware utilization ratio from 50% to 75%. Besides, we propose an early termination scheme that can dynamically adjust the number of iterations. The multi-mode chip can be maximally measured at 83.3 MHz with only 52 mW power consumption. The core area is 4.45 mm
²
and the die area is 8.29 mm
²
.