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Digital approaches concerning the I/Q imbalance problem in zero-intermediate frequency (zero IF) mixing scheme have one of two main objectives: the first one is knowing the parameters of a widely—linear system (WLS) that models this problem with the purpose of devising a compensation scheme (calibration). The second one is estimating the system gain and phase imbalance values before and after calibrating...
In this paper, we present a flexible and distributed homogeneous Software Defined Radio (SDR) platform. This platform is an array of processing elements, called Smart ModEm Processors (SMEP), interconnected by a Network-on-Chip. Implemented in ST65nm, each processing element performs 3.2 GMAC/s with 77 GBits/s internal bandwidth while dissipating 110mW. Each SMEP unit contains a MIPS processor for...
Applications like 4G baseband modem require single-chip implementation to meet the integration and power consumption requirements. These applications demand a high computing performance with real-time constraints, low-power consumption and low cost. With the rapid evolution of telecom standards and the increasing demand for multi-standard products, the need for flexible baseband solutions is growing...
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