Zobrazeno 1 - 10
of 65
pro vyhledávání: '"David E. Dodds"'
Publikováno v:
IET Communications. 6:2630-2638
Optimal training design and channel estimation for spatially correlated multi-user multi-input multi-output with orthogonal frequency-division multiplexing (MIMO-OFDM) systems is still an open research topic of great interest. This study first applie
Publikováno v:
IEEE Transactions on Vehicular Technology. 61:2864-2870
This paper proposes an optimal training design for an amplify-and-forward (AF) relay system, in which the source, relay, and destination are all equipped with multiple antennas. Examined is the scenario when spatial correlation exists among the multi
Publikováno v:
Measurement. 42:264-268
The energy spectral density characterization of microseismic events in two potash mines is presented. It is shown that there is little difference between the two mine characterizations, evidenced by each having an approximate 3 dB bandwidth of 38 Hz
Publikováno v:
Wireless Personal Communications. 47:383-397
This paper is concerned with the bit error probability (BEP) of coded unitary space---time modulation systems based on finite-length low density parity check (LDPC) codes. The union bound on the BEP of the maximum likelihood (ML) decoding is derived
Publikováno v:
Canadian Journal of Electrical and Computer Engineering. 33:177-182
This paper proposes a novel method to improve the utilization efficiency and performance of field-programmable gate arrays (FPGAs). The proposed method, ExorBDD, uses a stage of exclusive-sum-of-product (ESOP) minimization, followed by a stage of dec
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :2975-2978
Coded modulation systems based on low density parity check (LDPC) codes of finite lengths are considered. The union bounds on the bit error probabilities of the maximum likelihood (ML) decoding are presented for both additive white Gaussian noise (AW
Publikováno v:
Journal of Circuits, Systems and Computers. :273-281
The increasing demand for Internet and World Wide Web access from the home has stimulated research into finding methods of providing access at rates greater than the 33.6 kb/s offered by current computer modems. Most copper telephone pairs have bandw
Publikováno v:
CCECE
Interference from ground sources continues to be a serious problem for satellite communications operators. In this paper, algorithms for determining the geographic position of the source are discussed. One line of position can be derived from the tim
Publikováno v:
CCECE
QAM based communications systems suffer performance loss due to the practical implementation of the matched filter in the receiver. The practical matched filter causes two types of interference: Intersymbol Interference and Adjacent Channel Interfere
Publikováno v:
CCECE
Certain standards such as DOCSIS mandate symbol-spaced equalizers. Unfortunately, performance depends strongly on the sampling times of the receiver's matched filter. This paper investigates timing error sensitivity with respect to modulation error r