Abstract In the field of communication system products, most datapath Digital Signal Processing algorithms are initially developed at a high-level in MATLAB® or C/C++. Subsequently, design engineers use these models as a reference for implementing Register Transfer Level designs. The conventional approach to verify their equivalence involves extensive Universal Verification Methodology dynamic simulations, which can last for months and require significant verification efforts. However, some elusive errors might still occur because it is infeasible to explore all input combinations with this method. On the other hand, Formal Equivalence Verification aims to verify that a Register Transfer Level design is functionally equivalent to the reference high-level C/C++ model across all possible legal states. With recent advancements in formal solver technology, Formal Equivalence Verification provides a distinct benefit by using mathematical methods to ensure that the Register Transfer Level (timed) matches the original high-level C/C++ model (untimed). This drastically reduces the verification time and ensures the exhaustive coverage of the design state space. This paper presents an in-depth exploration of complex Finite State Machine with datapath verification, specifically focusing on Multiplier-Accumulator, Tone Generator, and Automatic Gain Control, by employing the formal equivalence methodology. Although these signal processing blocks were previously verified throughout Universal Verification Methodology dynamic simulations, Formal Equivalence Verification was able to identify hard-to-find bugs in just a few weeks by utilizing the new workflow, thereby streamlining the verification process.

This paper presents a single chip implementation of a space-time algorithm for co-channel interference (CCI) and intersymbol interference (lSI) reduction in GSM/DCS systems. The temporal channel for the Viterbi receiver and the beamformer weights for the CCI rejection are estimated jointly by optimizing a suitable cost function for separable space-time channels. Taking into account present day integration capabilities provided by FPGA (Field Programmable Gate Array), the feasibility is demonstrated of a single chip JSTE solution based on a three processor architecture for carrier beamforming, equalization and demodulation.

This paper presents a single chip implementation of a space-time algorithm for co-channel interference (CCI) and intersymbol interference (ISI) reduction in GSM/DCS systems. The temporal channel for the Viterbi receiver and the beamformer weights for the CCI rejection are estimated jointly by optimizing a suitable cost function for separable space-time channels. By taking into account of the current integration capabilities provided by the FPGA (field programmable gate array), the feasibility of a single chip JSTE solution based on a three-processor architecture for carrier beamforming, equalization and demodulation is demonstrated.