低复杂度Reed-Solomon解码器在地震勘探仪器中的应用  

Application of low complexity Reed-Solomon decoder in seismic exploration

作　　者：汪海山[1] 马骋[1] 贾惠波[1] 

机构地区：[1]清华大学精密测试技术及仪器国家重点实验室,北京100084

出　　处：《仪器仪表学报》2010年第7期1632-1637,共6页Chinese Journal of Scientific Instrument

摘　　要：针对地震勘探仪器,本文提出了一种RiBM(reformulated inversionless berlekamp-massy)算法的改进算法——ARiBM(area-efficient RiBM)算法。RiBM算法是一种阵列式的并行结构,其优点是解码速度快,所有处理单元的结构都相同,缺点是解码器占用的逻辑资源大。利用RiBM算法中处理单元结构相同的优势,ARiBM将RiBM算法中的运算量展开,大大提高了处理单元的利用率,降低了解码器占用的逻辑资源。大型地震采集系统具有逻辑资源要求苛刻、解码速度相对容易满足等特点,与ARiBM算法的特性完全吻合,因此,ARiBM算法有望在类似的系统中得到广泛应用。Aiming at seismic exploration instrument, this paper proposes a modified RiBM （Reformulated inversion-less Berlekamp-Massy） algorithm-ARiBM （Area-efficient RiBM）. RiBM algorithm is a kind of systolic array architecture; its advantages are fast decoding speed and all processing elements （PEs） have a unified form. The disadvantage of RiBM is high complexity in logic resource. With the advantage of unified PEs, ARiBM expands the systolic array architecture of RiBM serially, so that the utilization of PEs is optimized and the logic resource is reduced greatly. Large-scale seismic acquisition system （LSAS） has strait logic resource constraint and relatively low decoding speed requirement, which match the characteristics of ARiBM algorithm well, so the ARiBM algorithm is expected to be applied in similar system widely.

关 键 词：REED-SOLOMON码 解码器 Berlekamp—Massey算法 低复杂度 

分 类 号：TN919.33[电子电信—通信与信息系统]