Orthogonal and non-orthogonal codes
Orthogonal and quasi orthogonal space time block codes
... square orthogonal designs, the new codes presented in this thesis also enjoy the benefits of achieving full diversity and minimum code length, and they can also be used as differential space-time ...
209
On the Non-Orthogonal Layered Broadcast Codes in Cooperative Wireless Networks
... the non CSI scheme; first is the power gain due to the possible power allocation based on the CSI and second gain comparing to the proposed scheme is that they have higher spectral efficiency due to longer ...
125
Hybrid ARQ Schemes for Non-orthogonal Space-time Block Codes
... using a convolution code with rate R. This packet is repeatedly transmitted until an ACK is received. When a packet is first received, it is decoded using a rate R maximum- likelihood decoder. If there are detected ...
127
Line polar Grassmann codes of orthogonal type
... The orthogonal group O(V ) stabilizing the quadric Q has 3 orbits on the points of V ; these correspond respectively to totally singular, external and internal points to ...
11
ℤ4 codes and their Gray map images as orthogonal arrays
... certain non-linear codes which have more codewords (and thus better error-correcting capabilities) than any linear code are im- ages of linear codes over Z 4 under the non-linear Gray ...
7
New Walsh-Like Non-Linear Phase Orthogonal Codes for Direct Sequence CDMA Communication
... —Walsh codes and Gold codes have been used as a spread spectrum codes in Code Division Multiple Access (CDMA) communication because of their ease of generation than the efficiency of these ...these ...
5
Some results on caps and codes related to orthogonal Grassmannians — a preview
... 2.1 Orthogonal Grassmannians and their embeddings Let V := V (2n + 1, q) be a (2n + 1)–dimensional vector space over a finite field Fq endowed with a non–singular quadratic form η of Witt index ...
6
A Novel "Near Orthogonal Spreading Codes" and its Performance Analysis
... spreading codes are not orthogonal ...spreading codes as it is a function of MAI and ...spreading codes with low cross correlation values in order to reduce the effect of ...at non zero ...
12
Semidefinite programming, multivariate orthogonal polynomials, and codes in spherical caps
... Remark 4.2. The matrix coefficients of a polynomial F do only trivially depend on the choice of d. The matrix coefficients associated to d 0 ≥ d will simply be the ones associated to d, enlarged by sufficiently many rows ...
13
Mass Formula for Self-Orthogonal Codes over Z p 2
... are taken to be in Z m . However, since we deal with codes over Z p and Z p 2 at the same time, we adopt this non-standard convention to avoid cumbersome notation. We denote by x · y the standard inner ...
17
Space-Time Codes for MIMO systems : Quasi-Orthogonal design and concatenation
... Space-Time Codes from quasi-orthogonal designs is transformed into an equivalent block-diagonal MIMO-channel with identical blocks having constant eigenvectors, independent of the channel ...a ...
129
MIMO systems for turbo coded cooperation over orthogonal and non-orthogonal channels
... The IDMA technique, proposed in [4], can be considered as a special case of the CDMA technique, where the different sources are distinguished by means of interleavers (see Fig. 3). Add to that, IDMA inherits many ...
6
Non Orthogonal Explicit Semantic Analysis
... present Non- Orthogonal ESA (NESA) which represents more fine grained semantics of a word as a vector of explicit concept dimensions, where every such concept dimension further consti- tutes a semantic ...
9
Non-negative orthogonal greedy algorithms
... Non-Negative Orthogonal Greedy Algorithms Thanh ...with non- negative sparse signal reconstruction, a series of non-negative least-squares subproblems have to be ...Recently, ...
17
Low Latency Driven Effective Capacity Analysis for Non Orthogonal and Orthogonal Spectrum Access
... of non-orthogonal and orthogonal spectrum access protocols (more generically known as NOMA) in supporting ultra-reliable low-latency communications ...downlink orthogonal multiple access (OMA) ...
6
Lectures Orthogonal and Orthonormal Bases. Orthogonal projections.
... Although in this course we consider mostly the real vector spaces, we give also some information on the important concept of the inner product in complex vector spaces. Definition.[r] ...
8
A VLSI Design of a Novel Architecture for Orthogonal Latin Square Codes
... OLS codes Provision against soft errors that apparent they as the bit-flips in memory is the main motto of error detection and ...Hocquenghem codes, Reed–Solomon codes, punctured difference set ...
6
An Enhanced Information Security System Using Orthogonal Codes and MRJTC
... Orthogonal coding technique in turn results in enhanced security with increase in robustness and information integrity which makes it practically impossible to access the information without respective ...
5
Trellis-Coded Non-Orthogonal Multiple Access
... Trellis-Coded Non-Orthogonal Multiple Access Xun Zou, Student Member, IEEE, Mehdi Ganji, Student Member, IEEE, and Hamid Jafarkhani, Fellow, IEEE Abstract—In this letter, we propose a trellis-coded ...
6
On orthogonal polynomials spanning a non-standard flag
... of orthogonal polynomials defined by differential ...exist orthogonal polynomials defined by 2nd order differential equations that fall outside the classical families of Jacobi, Laguerre, and Hermite ...
25