Area-Efficient On-the-Fly Code Generator for BDS B1C Receivers

Due to the remarkable progress, BeiDou Navigation Satellite System (BDS) has increased its influence in the area of GNSS. Although there is a lot of research on algorithms to improve the positional accuracy of BDS, research on its implementation is insufficient. For the first time, we present an area-efficient code generator, which plays an important role within the BDS receivers. Whereas the straightforward LUT-based implementation demands a tremendous hardware complexity, the proposed structure can save hardware complexity by generating B1C code in an on-the-fly manner using a small size of LUTs. The straightforward and proposed code generators are synthesized using a CMOS 180nm process. Compared to the straightforward code generator, the proposed code generator reduces hardware complexity by 94.23%. As a result, the proposed code generator can be a promising candidate to implement an optimized BDS B1C receiver with a small hardware complexity.