The model for a broadcast channel with confidential messages (BC-CM) plays an important role in the physical layer security of modern communication systems. In recent years, it has been shown that a noiseless feedback channel from the legitimate receiver to the transmitter increases the secrecy capacity region of the BC-CM. However, at present, the feedback coding scheme for the BC-CM only focu...

Global Positioning System (GPS) is proven to be an accurate positioning sensor. However, there are several sources of errors such as ionosphere and troposphere effects, satellite time errors, errors of orbit data, receivers errors, and errors resulting from multi-path effect which reduce the accuracy of low-cost GPS receivers. These sources of errors also limit the use of single-frequency GPS r...

We provide a general overview of the recent development on the constrained group decoder (CGD) for interference channels. We first consider the CGD for a simple system of interference channels with no feedback from the receivers to the transmitters, where the transmitters employ fixed-rate channel codes and modulation schemes. We provide simulation results to show that, compared with the interf...

We study the problem of designing optical receivers to discriminate between multiple coherent states using coherent processing receivers—i.e., one that uses arbitrary coherent feedback control and quantum-noise-limited direct detection—which was shown by Dolinar to achieve the minimum error probability in discriminating any two coherent states. We first derive and re-interpret Dolinar’s binary-...

In this paper, we generalize a differential detection technique, which was introduced in [1] for a Gaussian Minimum Shift Keying (GMSK) scheme, to include any Correlative Encoded Continous Phase Modulated (CECPM) signalling format. Similarly to [1], the proposed symbol-by-symbol receivers employ decision feedback to partially remove the effects of the destructive Inter-Symbol-Interference (lSI)...

corrective feedback (cf) and its different types have long absorbed many scholars and practitioners. as ellis (2009) mentioned some experimental studies need to be carefully designed to discover the relative effectiveness of each of these cf techniques. the goal of this qualitative study was to discover whether the employment of different cf strategies could bring about an attitudinal shift. to...

Quasi-coherent optical receivers have recently emerged targeting access networks, offering improved sensitivity and reach over direct-detection schemes at the expense of a higher receiver bandwidth. Higher levels system integration together with sufficiently wideband front-end blocks, in particular high-speed linear transimpedance amplifiers (TIAs), are currently demanded to reduce cost scale u...

We consider the benefits of coding in wireless networks, specifically its role in exploiting the local broadcast property of the wireless medium. We first argue that for unicast, the throughput achievedwith network coding is the same as that achievedwithout any coding. This argument highlights the role of a general max-flow min-cut duality and is more explicit than previous proofs. The maximum ...