Design and implementation of orthogonal wavelet division multiplexing (OHWDM) with minimum bit error rate

Raajan, N. R.; Monisha, B.; Kumar, Mohan; Philomina, A. Jenifer; Priya, M.V.; Parthiban, D.; Suganya, S.

doi:10.1109/tisc.2011.6169097

Cited by 5 publications

(2 citation statements)

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“…Analyzing the approaches described in [5][6][7][8][9] gives insight about the extensive research performed on the various solution approaches to problems of LTE OFDMA systems and provides proof that orthogonal wavelets are a better and viable alternative to the existing wireless systems. Although the analysis and evaluations were done for BER and PAPR, it lacks in a unified system implementation, resource analysis, and thorough performance evaluation for current LTE systems.…”

Section: Key Contributionsmentioning

confidence: 99%

“…Previous work concentrated on digital video broadcast, and results were only plotted for the BPSK modulation scheme [5,6]. Raajan et al [7] provided bit error rate (BER) performance graphs for all the wavelets and modulation schemes, but no hardware architecture was provided for the proposed system. Similarly, Tao et al [8] and Liew et al [9] analyzed orthogonal wavelet division multiplexing (OWDM) for signaling over wideband linear time-varying channels (LTV) but, again, did not provide any architecture for deployment.…”

Section: Introductionmentioning

confidence: 99%

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An orthogonal wavelet division multiple-access processor architecture for LTE-advanced wireless/radio-over-fiber systems over heterogeneous networks

Mahapatra

Leung

Stouraitis

2014

EURASIP J. Adv. Signal Process.

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The increase in internet traffic, number of users, and availability of mobile devices poses a challenge to wireless technologies. In long-term evolution (LTE) advanced system, heterogeneous networks (HetNet) using centralized coordinated multipoint (CoMP) transmitting radio over optical fibers (LTE A-ROF) have provided a feasible way of satisfying user demands. In this paper, an orthogonal wavelet division multiple-access (OWDMA) processor architecture is proposed, which is shown to be better suited to LTE advanced systems as compared to orthogonal frequency division multiple access (OFDMA) as in LTE systems 3GPP rel.8 (3GPP, http://www.3gpp.org/DynaReport/36300.htm). ROF systems are a viable alternative to satisfy large data demands; hence, the performance in ROF systems is also evaluated. To validate the architecture, the circuit is designed and synthesized on a Xilinx vertex-6 field-programmable gate array (FPGA). The synthesis results show that the circuit performs with a clock period as short as 7.036 ns (i.e., a maximum clock frequency of 142.13 MHz) for transform size of 512. A pipelined version of the architecture reduces the power consumption by approximately 89%. We compare our architecture with similar available architectures for resource utilization and timing and provide performance comparison with OFDMA systems for various quality metrics of communication systems. The OWDMA architecture is found to perform better than OFDMA for bit error rate (BER) performance versus signal-to-noise ratio (SNR) in wireless channel as well as ROF media. It also gives higher throughput and mitigates the bad effect of peak-to-average-power ratio (PAPR).

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