TY  - JOUR
AU  - Pijetlovic, Stefan
AU  - Subotic, Milos
AU  - Pjevalica, Nebojsa
PY  - 2018/08/20
Y2  - 2025/01/01
TI  - Optimizing FDTD Memory Bandwidth by Using Block Float-Point Arithmetic
JF  - Elektronika ir Elektrotechnika
JA  - ELEKTRON ELEKTROTECH
VL  - 24
IS  - 4
SE  - 
DO  - 10.5755/j01.eie.24.4.21475
UR  - https://eejournal.ktu.lt/index.php/elt/article/view/21475
SP  - 32-37
AB  - &lt;p&gt;Finite-difference time-domain is a numerical method used for modelling of computational electrodynamics. The method is resource intensive, especially regarding memory usage. Multiple memory accesses are required per single computation so memory bandwidth acts as a bottleneck limiting the overall performance. Existing solutions use either fixed-point or floating-point arithmetic, depending on the complexity of the target platform, to model the data. Floating-point requires less memory access but the computation is more intensive due to the normalisation. Fixed-point is the opposite – simple computation but with more memory access for the same precision. The novelty of this paper is in the block floating-point realization which is the middle ground between the two. The approach is less compute intensive than the floating-point solutions while using less memory than the fixed-point realization. This makes the solution an alternative for bit-exact platforms, such as field-programmable gate arrays. The results are compared to both floating-point and fixed-point implementations and the memory bandwidth and other resources needed for targeted platform are calculated.&lt;/p&gt;&lt;p&gt;DOI: &lt;a href=&quot;http://dx.doi.org/10.5755/j01.eie.24.4.21475&quot;&gt;http://dx.doi.org/10.5755/j01.eie.24.4.21475&lt;/a&gt;&lt;/p&gt;
ER  -