Consisting of selected technical contributions to the European Project COST252 (Evolution of Satellite Personal Communications from 2nd to Future Generation Systems) this volume …
The design of new sequences for high processing gain (PG) in DSSS systems with band limited noise channel and no aliasing, is shown. The PN-EB sequences present the same …
R Rodrigues, R Dinis, F Cercas - 2012 IEEE Vehicular …, 2012 - ieeexplore.ieee.org
Nonlinear OQPSK-type (Offset Quadrature Phase Shift Keying) modulations can be designed to have almost constant envelope, making it suitable for systems requiring highly …
Recent studies have determined the performance of TCH (n, k)(Tomlinson, Cercas, Hughes) codes in different environments, namely for mobile satellite channels for which TCH codes of …
A new class of pseudonoise even balanced (PN-EB) binary spreading sequences is derived from existing classical odd-length families of maximum-length sequences, such as those …
TCH sequences have been studied for code-spreading and channel coding, but its true essence if that of synchronization and channel estimation. This is due to their property of …
The objective of this paper is to present the estimated performance for TCH codes, in channels where errors can occur independently and in burst. Since this family of block …
O uso de codificação em sistemas de telecomunicações revela-se uma técnica com um contributo essencial na melhoria da recuperação de sinais transmitidos. Dependendo das …
In this paper we describe parallel concatenations of two convolutional encoders based on nonlinear cyclic codes with codewords of length n= 2 m, m being a positive integer. The …