Covert Netted Wireless Noise Radar Sensor: OFDMA-Based Communication Architecture

Surender, Shrawan C.; Narayanan, Ram M.

doi:10.1109/milcom.2006.302491

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…Then Xte,t 1, 2, 0 + 1, 3, 2 = 2, 0, 2 and the corresponding mixed radix digits are: Figure 4 presents an RNS implementation of a 233-tap notch FIR digital filter that was designed for use in a random noise radar system to eliminate noise from the frequency band 1.2 -1.3 MNHz. [11]. This filter was implemented in an RNS-SDR system with moduli {71, 79, 83, 89, 97}, where m5 97 was the redundant modulus.…”

Section: Fault Tolerance Via Modular Arithmeticmentioning

confidence: 99%

Fault Tolerant Signal Processing for Nano-scale VLSI Circuit Technology

Jenkins

Radhakrishnan

Pal

et al. 2006

2006 Fortieth Asilomar Conference on Signals, Systems and Computers

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Adaptive fault tolerance (AFT) takes advantage of non-canonical adaptive filter architectures that use adaptive principles to achieve automatic fault recovery. Recent work has demonstrated the capability of AFT methods to mask single and multiple stuck-at bit errors in the filter coefficients, and also to demonstrate the capability of AFT filters to resist the effects of soft errors. This paper explores several approaches to fault tolerance that can be used in VLSI adaptive filters that are prone to soft errors caused by scaling down of feature dimensions and voltage thresholds.

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Section: Fault Tolerance Via Modular Arithmeticmentioning

confidence: 99%

Fault Tolerant Signal Processing for Nano-scale VLSI Circuit Technology

Jenkins

Radhakrishnan

Pal

et al. 2006

2006 Fortieth Asilomar Conference on Signals, Systems and Computers

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“…As in [1][2][3][4], multi-carrier signals such as OFDM allow for flexibility and efficient use of the spectral resources. Furthermore, when considering the simultaneous use of waveforms for both radar and communication a large timebandwidth product allows for sufficient data rate [5].…”

Section: Introductionmentioning

confidence: 99%

Theoretical performance of reiterated LMMSE filtering and coded radar waveforms

Ruggiano

Stolp

Genderen

2009

Int. J. Microw. Wireless Technol.

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Orthogonal frequency division multiplexing (OFDM) waveforms offer strong advantages for integrated communication and radar systems. However, they exhibit inherent high-range sidelobes after matched filtering when standard communication constellation symbols are used for the coding of the carriers. Consequently, they require filtering at the receiver that can serve for sidelobe suppression in order to avoid target masking. However, unmasking is not the only concern; it is crucial to evaluate the filtering scheme both in terms of sidelobe suppression capability and in terms of output signal-to-noise ratio. This last criterion is essential when aiming at also detecting weaker reflections. In this paper the theoretical performance of the reiterated filtering technique based on linear minimum mean square error (LMMSE) is derived and compared to the matched filter. The unmasking capabilities are relevant, but also output power figures. Complex-valued filter output peaks are also evaluated and compared to the matched filter output peaks. Moreover, the performance of reiterated LMMSE is evaluated for OFDM communication-encoded radar waveforms.

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