Radio communication systems

A bit (binary digit) is the smallest unit of information • N = 2n where N is the number of representations and n is the number of bits (ex. ASCII, Unicode, PCM code etc.) • Data communications transfer information using codes that are transmitted as signals (either analog or digital) • In general, analog lines provide a slow service that contains high error rates.

59p trungkiendt9 24-04-2011 102 18   Download

Lecture "Radio Communication Circuits: Chapter 1 & 2" presents the following contents: Introduction to Communication Systems (Elements of Communication Systems, Radio Frequency Metrics, Parallel-Tuned Circuit,...), Radio Frequency (RF) Power Amplifiers (Class C Amplifier, Class D Amplifier). Invite you to consult.

127p doinhugiobay_12 15-01-2016 66 5   Download

In this thesis, focus on the wireless links between devices equipped by deployed operating personnel and intermediary access point infrastructure. We use multi-radio (MR) platforms, wireless devices with multiple and diverse transceiver technologies, to produce robust and reliable links through adaptive control of available transceivers. Primarily, we study the application of intelligent control techniques, namely reinforcement learning (RL), for adaptive control over diverse transceivers to achieve the desired robustness and reliability under dynamic environmental conditions.

185p runthenight04 02-02-2023 10 2   Download

Evaluating nonlinear HPA models regarding to problem of simulating intermodulation products (IMP). Proposing the polysine model for precise simulation of IMPs, especially for signals with complex structures. Proposing the use of predistortion schemes for MIMO-STBC systems based on thorough analyses of the nonlinear HPA effects on these systems with transmit/receive filters introduced in the model.

14p gaocaolon6 30-07-2020 42 1   Download

Study counter measures to limit the adverse impacts of nonlinear distortions in MIMO-STBC systems using predistortion at the transmitter; propose phase estimation and compensation schemes that overcome the adverse impacts of nonlinear distortions at the receiver.

158p gaocaolon6 30-07-2020 28 3   Download

Smart Antennas Smart antennas are an important application of SDR technology [381]. An in-depth treatment is beyond the scope of this chapter. The objective is to introduce the topic to identify the implications of smart antennas for softwareradio architecture. The smart antenna is a logical extension of antenna diversity described above [382].

15p tienvovan 11-09-2010 97 10   Download