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Review of Distributed Beamforming

Her J., Wysoki T. A., Wysoki B. J.

Journal of Telecommunications and Information Technology

2011

nr 1

78-88

As the capabilities of individual nodes in wireless sensor networks increase, so does the opportunity to perform more complicated tasks, such as cooperative distributed beamforming to improve the range of communications and save precious battery power during the transmission.This work presents a review of the current literature focused on implementing distributed beamformers; covering the calculation of ideal beamforming weights, practical considerations such as carrier alignment, smart antennas based on distributed beamformers, and open research problems in the field of distributed beamforming.

Application of convolutional interleavers in turbo codes with unequal error protection

Vafi S., Wysoki T. A.

Journal of Telecommunications and Information Technology

2006

nr 1

17-23

This paper deals with an application of convolutional interleavers in unequal error protection (UEP) turbo codes. The constructed convolutional interleavers act as block interleavers by inserting a number of stuff bits into the interleaver memories at the end of each data block. Based on the properties of this interleaver, three different models of UEP turbo codes are suggested. Simulation results confirm that utilizing UEP can provide better protection for important parts of each data block, while significantly decreasing the number of stuff bits.