Wireless communications exploits the electromagneticmedium,which is intrinsically polarization-sensitive. Much wireless technology, however, has been devised without explicit consideration of polarization. Past decades of wireless technology has mainly exploited the dimensions of time, frequency and space. As such, polarization is a logical next step in this progression. This special issue focu...

We revisit the established problem of protein structure determination from geometrical restraints from NMR, using convex optimization. It is well-known that the NP-hard distance geometry problem of determining atomic positions from pairwise distance restraints can be relaxed into a convex semidefinite program (SDP). However, in practice the distance restraints are imprecise, and sometimes spars...

2 Measurement Types and Performance Bounds 4 2.1 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.1 Nuisance Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Cramér-Rao Bounds for Localization . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2.1 TOA, TDOA, and Distances . . . . . . . . . . . . . . . . . ....

Irregular repetition slotted aloha (IRSA) is a grant-free random access protocol for massive machine-type communications, where large number of users sporadically send their data packets to base station (BS). IRSA completely distributed multiple protocol: in any given frame, small subset the users, i.e., active transmit replicas packet randomly selected resource elements (REs). The first step d...

We study the Cramer-Rao bounds of parameter estimation and coherence performance for the next generation radar (NGR). In order to enhance the performance of NGR, the signal model of NGR with master-slave architecture based on a single pulse is extended to the case of pulse trains, in which multiple pulses are emitted from all sensors and then integrated spatially and temporally in a unique mast...

As a new radar system, FDA-MIMO has recently developed rapidly, as it broad prospects in angle-range estimation. Unfortunately, the performance of existing algorithms for is greatly degrading or even failing under condition array gain-phase error. This paper proposes an innovative solution to joint angle and range estimation error algorithm developed. Moreover, corresponding Cramér-Rao bound (C...

Work on single tone frequency estimation has focused on uniformly sampled data. However, it has been shown that, for a given number of samples, more information on the frequency of a signal can be gained by non-uniform sampling schemes. Unfortunately, an optimum sampling pattern (that, for example, minimizes the Cramér-Rao bound) does not automatically have a fast and simple algorithm for frequ...

A simultaneously transmitting and reflecting intelligent surface (STARS) enabled integrated sensing communications (ISAC) framework is proposed, where the whole space divided by STARS into a communication space. novel sensing-at-STARS structure, dedicated sensors are installed at STARS, proposed to address significant path loss clutter interference for sensing. The Cramer-Rao bound (CRB) of 2-d...

Direction of arrival (DOA) estimation is an important topic in array signal processing. Currently, most research activities are focused on the single transmission (SST) type signals, i.e. only one physical used to carry information from a transmitter receiver with given polarisation setting. However, make full use degrees freedom spatial domain, signals based dual (DST) model more and widely us...