Electrical Communications
The multipath radio channel, fading and OFDM
Delay spread, intersymbol interference and coherence bandwidth, Rayleigh fading and diversity, OFDM with FFT and cyclic prefix, the Wi-Fi example, OFDMA and…
Category
Fourth Year
Fourth-year subjects: applied electronics, systems theory, electrical communications, digital electronics, electrical measurements and process control.
82 articles
Electrical Communications
Digital modulation performance: bandwidth, Eb/N0 and errors
Symbol and bit rate, raised cosine and occupied bandwidth, the link between Eb/N0 and SNR with proof, error probability of BPSK, QPSK…
Electrical Communications
Frequency modulation, PLLs and synthesisers
The FM spectrum and Bessel functions, FM's noise advantage, pre-emphasis, the phase-locked loop and its uses, integer and fractional-N frequency synthesisers.
Electrical Communications
The superheterodyne receiver, the image frequency and single sideband
Frequency conversion with the mixer, intermediate frequency, image frequency with an example, DSB-SC and coherent demodulation, SSB, direct conversion and software-defined radio.
Electrical Communications
Receiver noise: noise figure, sensitivity and Friis's formula
Structure of a communication system, decibels and dBm, thermal noise at −174 dBm/Hz, noise figure and equivalent temperature, sensitivity, Friis's formula with…
Digital Electronic Systems
Semiconductor memories: SRAM, DRAM and flash
Array organisation with decoder and sense amplifiers, the six-transistor SRAM cell, the DRAM cell and refresh, NOR and NAND floating-gate flash, comparison…
Digital Electronic Systems
FPGAs and hardware description languages
Look-up tables and logic blocks, programmable interconnect and dedicated blocks, when to use an FPGA, a counter in Verilog, the design flow…
Digital Electronic Systems
Timing of synchronous circuits and clock domains
The setup constraint and maximum frequency with an example, the hold constraint, clock skew and jitter, pipelining, static timing analysis, clock domain…
Digital Electronic Systems
Sequential logic: registers, counters and finite state machines
Registers and shift registers, LFSRs, synchronous and asynchronous counters, Moore and Mealy machines, complete design of a sequence recogniser, encodings and reset.
Digital Electronic Systems
Latches and flip-flops: memory, setup, hold and metastability
The NOR SR latch, the transparent D latch, the master-slave D flip-flop, setup and hold times, metastability with the MTBF calculation, and…