# C. Tellambura

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- Publications
- Influence

A Mixture Gamma Distribution to Model the SNR of Wireless Channels

- S. Atapattu, C. Tellambura, H. Jiang
- Mathematics, Computer Science
- IEEE Transactions on Wireless Communications
- 24 October 2011

Composite fading (i.e., multipath fading and shadowing together) has increasingly been analyzed by means of the K channel and related models. Nevertheless, these models do have computational and… Expand

Probability of error calculation of OFDM systems with frequency offset

- K. Sathananthan, C. Tellambura
- Computer Science
- IEEE Trans. Commun.
- 1 November 2001

Orthogonal frequency-division multiplexing (OFDM) is sensitive to the carrier frequency offset (CFO), which destroys orthogonality and causes intercarrier interference (ICI), Previously, two methods… Expand

Energy Detection Based Cooperative Spectrum Sensing in Cognitive Radio Networks

- S. Atapattu, C. Tellambura, H. Jiang
- Computer Science, Mathematics
- IEEE Transactions on Wireless Communications
- 28 January 2011

Detection performance of an energy detector used for cooperative spectrum sensing in a cognitive radio network is investigated over channels with both multipath fading and shadowing. The analysis… Expand

SLM and PTS peak-power reduction of OFDM signals without side information

- D. Jayalath, C. Tellambura
- Mathematics, Computer Science
- IEEE Transactions on Wireless Communications
- 1 September 2005

Selected mapping (SLM) and partial transmit sequence (PTS) are well-known techniques for peak-power reduction in orthogonal frequency-division multiplexing (OFDM). We derive a simplified maximum… Expand

Equal-gain diversity receiver performance in wireless channels

- A. Annamalai, C. Tellambura, V. Bhargava
- Computer Science, Mathematics
- IEEE Trans. Commun.
- 1 October 2000

Performance analysis of equal-gain combining (EGC) diversity systems is notoriously difficult only more so given that the closed-form probability density function (PDF) of the EGC output is only… Expand

Spectrum Sharing in Wireless Networks via QoS-Aware Secondary Multicast Beamforming

- K. Phan, S. Vorobyov, N. Sidiropoulos, C. Tellambura
- Computer Science, Mathematics
- IEEE Transactions on Signal Processing
- 1 June 2009

Secondary spectrum usage has the potential to considerably increase spectrum utilization. In this paper, quality-of-service (QoS)-aware spectrum underlay of a secondary multicast network is… Expand

An efficient generalized sphere decoder for rank-deficient MIMO systems

- T. Cui, C. Tellambura
- Mathematics
- 26 September 2004

We derive a generalized sphere decoder (GSD) for rank-deficient multiple input multiple output (MIMO) systems using N transmit antennas and M receive antennas. This problem arises when N>M or when… Expand

Distribution functions of selection combiner output in equally correlated Rayleigh, Rician, and Nakagami-m fading channels

- Yunxia Chen, C. Tellambura
- Mathematics, Computer Science
- IEEE Transactions on Communications
- 15 November 2004

We develop a novel approach to derive the cumulative distribution functions (cdfs) of the selection-combining (SC) output signal-to-noise ratio (SNR) in equally correlated Rayleigh, Ricean, and… Expand

Error rates for Nakagami-m fading multichannel reception of binary and M-ary signals

- A. Annamalai, C. Tellambura
- Computer Science, Mathematics
- IEEE Trans. Commun.
- 2001

This paper derives new closed-form formulas for the error probabilities of single and multichannel communications in Rayleigh and Nakagami-m (1960) fading. Closed-form solutions to three generic… Expand

A PAPR Reduction Method Based on Artificial Bee Colony Algorithm for OFDM Signals

- Y. Wang, W. Chen, C. Tellambura
- Engineering, Mathematics
- IEEE Transactions on Wireless Communications
- 1 October 2010

One of the major drawbacks of orthogonal frequency division multiplexing (OFDM) signals is the high peak to average power ratio (PAPR) of the transmitted signal. Many PAPR reduction techniques have… Expand