By Use of Frequency Diversity and High Priority in Wireless Packet Retransmissions

Source: BNET

In Orthogonal Frequency Division Multiple Access (OFDMA) systems, the delay of packets has a great impact on Quality of Service (QoS), especially for real-time transmission. The basic concept of resource allocation in an ...
Full article at: BNET  More like this  2 days ago, 11:28am CDT

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Testbed for Cognitive Radio Networks Based on USRP2/N200 Modules

Source: BNET

This paper deals with description of software defined radio test-bed based on USRP2/N200 modules available from ETTUS research. The aim of this test-bed is to develop and test the algorithms for cognitive radi ...
Full article at: BNET  More like this  2 days ago, 9:56am CDT

Performance Analysis of Pilot Patterns in Coded OFDMA Systems Over Multi-User Channels

Source: BNET

This paper presents a systematic approach for analyzing the bit error probability of a coded Orthogonal Frequency-Division Multiple Access (OFDMA) system in multiuser channels. A comparative analysis with conventional ...
Full article at: BNET  More like this  5 days ago, 11:46am CDT

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Improved Wideband Precoding With Arbitrary Subcarrier Grouping in MIMO-OFDM Systems

Source: BNET

Precoding in the multiple-input multiple-output orthogonal frequency division multiplexing system is investigated. In conventional WideBand Precoding (WBP), only one precoder, obtained from the decomposition of the subcarri ...
Full article at: BNET  More like this  6 days ago, 10:24am CDT