Analysis and Compensation of RF Impairments for Next Generation Multimode GNSS Receivers

Abstract

Abstract-Global Navigation Satellite System (GNSS) receivers require solutions that are compact, cheap and low-power, in order to enable their widespread proliferation into consumer products. Furthermore, interoperability of GNSS with nonnavigation systems, especially communication systems will gain importance in providing the value added services in a variety of sectors, providing seamless quality of service for users. An important step into the market for Galileo is the timely availability of these hybrid multi-mode terminals for consumer applications. However, receiver architectures that are amenable to high-levels of integration will inevitably suffer from RF impairments hindering their easy widespread use in commercial products. This paper studies and presents analytical evaluations of the performance degradation due to the RF impairments and develops algorithms that can compensate for them in the DSP domain at the base band with complexity-reduced hardware overheads, hence, paving the way for low-power, highly integrated multi-mode GNSS receivers.

A LabVIEW-Based GPS Receiver Development and Testing Platform with DSP Peripherals: Case study with C6713 DSK

“…However, they are characterized by their flexibility and ease of programming. Examples of the highly sensitive GNSS receivers using DSPs are receivers in (Girau et al, 2007), (Cetin et al, 2007). DSP-based solutions might be slower but still allow for high throughput correlator implementations with a shorter development cycle, using e.g., Fast Fourier Transform (FFT) algorithms.…”

Interference mitigation techniques in modern wireless communication systems

“…In 1990, Casadevall and Olmos studied the influence of gain and phase mismatches between the two RF paths, and the different nonlinear characteristics of both RF power amplifiers in linear amplification using nonlinear components (LINCs) transmitter (TX) [31]. More recently, the impact of RF impairments in the performance of terrestrial [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] and satellite [49][50][51][52][53][54][55] communication systems was presented.…”