搜索结果: 121-135 共查到“代数编码理论”相关记录141条 . 查询时间(2 秒)
Unitals in $PG(2,q^2)$ with a large $2$-point stabiliser
Unitals $PG(2,q^2)$ large $2$-point stabiliser
2010/12/15
Let U be a unital embedded in the Desarguesian projective plane PG(2, q2). Write M for the subgroup of PGL(3, q2) which preserves U. We show that U is classical if and only if U has
two distinct poin...
Braided Symmetric Algebras of Simple $U_q(sl_2)$-Modules and Their Geometry
Braided Symmetric Algebras Simple $U_q(sl_2)$-Modules Their Geometry
2010/12/7
In the present paper we prove decomposition formulae for the braided symmetric powers of simple U q(sl2)-modules, natural quantum analogues of the classical symmetric powers of a module over a complex...
The Golden Code is a full-rate full-diversity space-time code, which achieves maximum coding gain for Multiple-InputMultiple-Output (MIMO) systems with two transmit and two receive antennas. Since fou...
Rank Bounds for Design Matrices with Applications to Combinatorial Geometry and Locally Correctable Codes
Design Matrices Applications Combinatorial Geometry Locally Correctable Codes
2010/12/10
A (q, k, t)-design matrix is an m×n matrix whose pattern of zeros/non-zeros satisfies the
following design-like condition: each row has at most q non-zeros, each column has at least
k non-zeros and ...
This paper introduces a random multiple access method for satellite communications, named Network Codingbased Slotted Aloha (NCSA). The goal is to improve diversity of data bursts on a slotted-ALOHA-l...
Quantifying Information Leakage in Finite Order Deterministic Programs
Quantifying Information Finite Order Deterministic Programs
2010/12/16
Information ow analysis is a powerful technique for reasoning about the sensitive information exposed by a program during its execution.
Joint Source-Channel Coding with Correlated Interference
Joint Source-Channel Correlated Interference
2010/11/29
In this paper, we study the joint source-channel coding problem of transmitting a discrete-time analog source over an AWGN channel with interference known at transmitter.
Coarse Network Coding: A Simple Relay Strategy to Resolve Interference
Coarse Network Coding Simple Relay Strategy Interference
2010/12/1
Reminiscent of the parity function in network coding for the butterfly network, it is shown that forwarding an even/odd indicator bit for a scalar quantization of a relay observation recovers 1 bit of...
Recently, Ebrahimi and Fragouli proposed an algorithm to construct scalar network codes using small fields (and vector network codes of small lengths) satisfying multicast constraints in a given singl...
On generalized Frame-Stewart numbers
multi-peg Tower of Hanoi Tower of Hanoi on graphs Frame-Stewart numbers generalized Frame-Stewart numbers
2010/11/26
or the multi-peg Tower of Hanoi problem with k 4 pegs, so far the best solution is obtained by the Stewart’s algorithm [15] based on the the following recurrence relation:Sk(n) = min
1tn 2 · Sk...
准循环码和准循环子空间
准循环码 循环无关 准循环子空间
2009/10/26
引入了线性空间的准循环子空间的概念，进而研究了准循环码与准循环子空间的关系，给出了准循环码的准循环子空间表示定理。
基于IFS系统的快速分形编码算法研究
编码算法 快速分形 IFS系统
2009/10/26
基于Jacquin提出的IFS系统,本文提出了一种新的分形编码匹配策略．这种新的匹配策略使编码时间大幅度缩短,有效地克服了目前分形编码技术的缺点．实验表明,本文提出的这一新的策略可使编码时间缩短80％左右．如果把本文提出的匹配算法与三行邻域搜索算法相结合,则编码时间进一步缩短,达99．30％左右,而且峰值信噪比下降很少．实验结果还表明:该匹配策略在提高编码速度和重构图像质量方面同时具有优势,有...
为了讨论二元Reed-Muller码的 Z4 线性, 文献中先后介绍了两类 Z4 线性码, 分别记为ZRM}(r, m)与QRM}(r, m), 它们在Gray映射下的二元像记为ZRM}(r, m)与 QRM}(r, m) . 该文系统地讨论了这两类 Z4 线性码. 计算了ZRM}(r, m)与QRM}(r, m)的类型, 证明当3 ≤ r ≤m-1时, ZRM}(r, m)是二元线性码, 而QR...
On Compression of Data Encrypted with Block Ciphers
ompression of Data Encrypted Block Ciphers
2010/12/2
This paper investigates compression of data encrypted with block ciphers, such as the Advanced
Encryption Standard (AES). It is shown that such data can be feasibly compressed without knowledge of th...
环F2+uF2上de Bruijn序列的一个有效升级算法
环F2+uF2 de Bruijn序列 D同态
2010/8/30
环F2+uF2上de Bruijn序列的一个有效升级算法。