Paul J. Lusina

• University of British Columbia

Since 2013, the fourth-year capstone design courses for the electrical and computer engineering programs at UBC are working only with projects defined by industrial partners. These capstone courses run over two terms (September to April) and are worth 10 credits. The projects involves teams of five students, which follow a common timeline, produce...

An inter-system adapter design is described which links the web service based DR NEP and WebSimP simulation platforms. The adapter enables the PSS Sincal electrical simulator to share results with the DR NEP which coordinates the data exchange among interdependent simulators. In this paper, we describe an adapter which supports decision makers invo...

Many legacy infrastructures are reaching the end of their service life. The necessary replacement of this infrastructure creates an opportunity to replace them with environmental and innovative systems. In this paper, a Smart Energy Micro Grid (SEMG) simulator is developed to model thermal energy alternatives for a large Canadian university. The si...

We investigate in this paper the effects of the user's presence on the performance of a multiple-input multiple-output (MIMO) system in data and in voice usage scenarios. The investigation studies the user effects on the antenna performance and how these are incorporated into the MIMO channel and the link characteristics. The antennas and the user...

We discuss in this paper the effects of antenna efficiency in the presence of a user and on the performance of a multiple-input multiple-output system. The investigation is carried out in different usage scenarios where the antenna efficiency changes significantly from one scenario to another. The propagation channel is defined to include the 3D an...

We investigate the effects of the user presence on a multi-antenna design from the channel perspective. Two usage scenarios are investigated, data and voice. The antennas and the user are electromagnetically simulated and are then integrated into the statistical 3GPP spatial channel model. There, the channel statistics are analyzed through the aver...

We present a new distributed antenna system which uses compressive sampling in the uplink. We distill the receive points to minimum requirements of battery-powered receive-only ¿remote samplers¿. The remote samplers transfer to a ¿central brain¿ the limited samples they capture. The central brain solves a linear program based on the L<sub>1</su...

The comparison of the outage capacity for multiple-input multiple-output (MIMO) channel models based on different underlying approaches is made. Three different channel models are considered: the 3GPP empirical spatial channel model (SCM), a multi-element transmit and receive antenna (METRA) analytical spatial channel model (A-SCM) and the correlat...

The comparison of the outage capacity for multiple-input multiple-output (MIMO) channel models that are based on different channel models is made. For this comparison, we chose the 3GPP Spatial Channel Model (SCM), a METRA Analytical Spatial Channel Model (A-SCM), and the correlation-based Long Term Evolution channel model (LTE). The effects of ant...

We present a method to incorporate the effect of the three-dimensional (3D) antenna radiation patterns into a two-dimensional (2D) multiple-inputmultiple-output (MIMO) channel model. The proposed method is a low-complexity technique that increases the accuracy of existing 2D spatial channel model (SCM) proposed by 3GPP for performance analysis of l...

This letter studies the performance of a multiple-input-multiple-output (MIMO) link in a macrocell environment, with emphasis on the effects of the antenna parameters as applied in different channel models. Two types of channel models are used in this evaluation. The first is a deterministic electromagnetic-based channel model that physically descr...

A hybrid method of modeling MIMO systems is presented through the combined use of full-wave electromagnetic (EM) simulations and statistical channel models. This approach consists of simulating each antenna in the antenna array to compute its embedded element pattern including all of the near-field electromagnetic and coupling effects. These embedd...

We evaluate the multiple-input multiple-output (MIMO) channel capacity dependence on angular spread, antenna element separation, and angle of arrival. The empirically derived spatial channel model (SCM) is selected for the simulations and an uncoupled ideal dipole uniform linear array is considered. We show that for a small angular spread (8deg), t...

We propose a hybrid non-orthogonal amplify- decode and forward (NADF) transmission protocol for two half- duplex relay nodes. This strategy allows simple amplify and forward (AF) nodes and more complex decode and forward (DF) nodes to participate jointly in the transmission of information. Such a strategy is useful in networks with heterogeneous de...

The paper considers the single relay orthogonal cooperative diversity decode and forward scenario as a block fading channel model. A closed form expression for the pairwise error probability is derived which leads to design criteria for full diversity and coding gain. Furthermore, the power distribution between the source and relay units is introdu...

A major challenge in the area of space time (ST) codes is to find codes suitable for efficient decoding, thus overcoming the problem of many existing ST code designs which require maximum-likelihood (ML) decoding. A solution could be to apply single-input single-output (SISO) channel codes and theory over temporal channel fading to the multi-input...

A solution for the design of space time codes over a complex signal constellation is given. The Gaussian integer field is described and shown to produce a similar complex signal constellation as QAM for particular parameters. The mapping between the Galois field and the Gaussian integer field is shown to preserve the rank statistics of codeword mat...

A space-time block code construction is presented which achieves maximum diversity for multi-antenna transmission. The construction is based on selected cyclotomic cosets of an extension field which are multiplied together to give a set of transformation polynomials. A space-time factorization code [1] can be constructed by encoding the information...

The critical design criterion for space-time codes in asymptotically good channels is the minimum rank between codeword pairs. Rank codes are a two-dimensional matrix code construction where by the rank is the metric of merit. We look at the application of rank codes to space-time code design. In particular, we provide construction methods of full-...

Space time codes seek to exploit the statistical properties of a multi-antenna transmission scenario. We focus on maximizing a codes diversity which is determined by the rank between codeword difference pairs at high SNR. This criterion must be evaluated over a complex modulation alphabet C. Work by Liu et al. (2000) presents a criterion for select...

The space time cyclotomic coset factorization codes are a new class of block space time codes which achieve full diversity. The codes are based on classical linear coding theory which facilitates their design. Full rank code constructions also exist based on the Gaussian integer field where p, is a prime number satisfying p, = 4 * n + 1, n an integ...

We introduce the concept of transforming a space-time code into an equivalent code space which reduces the maximum-likelihood trellis decoding complexity. This concept is illustrated using the space-time Hadamard (STH) code construction

The Hadamard matrix structure is applied to the construction of space-time codes. Space-time Hadamard (STH) codes are statistically analyzed with respect to diversity and coding gain criteria and are shown to have good statistical properties

The application of maximum rank distance (MRD) codes is investigated with respect to the space-time code scenario. A construction method is presented based on primitive polynomials over extended Galois fields. A one-to-one mapping is then performed between the Galois field code symbols and the complex transmission symbols

The purpose of this document is to investigate the design of a broadband satellite system which operates at the Ka frequency band. A channel model was developed which indicated that the satellite link would be noise limited and slowly time varying. Cyclostationary beamforming using the Cross-SCORE (Self Coherent Property Restoral) algorithm on a hi...

Thesis (M. Sc.)--Queen's University at Kingston, 1997. Includes bibliographical references.