Abstract
OFDM stands out for its favorable properties in both communication and sensing, making it a key modulation format for 6G. While most studies focus on estimation accuracy via metrics such as the Cramér-Rao Lower Bound (CRLB), this work emphasizes resolution, a complementary aspect captured through the ambiguity function (AF). We investigate position resolution in bistatic MIMO-OFDM systems by developing an analytical framework that provides closed-form expressions for the AF and the associated resolution, defined via the half-power beamwidth (HPBW). The framework reveals how waveform parameters, antenna configurations, and system geometry influence the ability to separate closely spaced targets, offering guidelines for the design of future ISAC networks.