Modulation and coding for satellite and space communications

Yuen, J. H.; Simon, M.K.; Miller, Warner H.; Pollara, F.; Ryan, C.; Morakis, J. C.

doi:10.1109/5.56936

Cited by 21 publications

(9 citation statements)

References 20 publications

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“…However, this e!ect may not be always fully compensated by the di!erential decoder, thus introducing a signi"cant bit-error-rate (BER) loss that has to be taken into account in the following performance evaluations. Neglecting the phase tracking as a source of additional errors [5,6,13] may lead to rather optimistic results. The proposed systems aim to achieve both improved performance and high power/spectrum e$ciency in the presence of Rayleigh fading with an acceptable amount of added complexity.…”

Section: Introductionmentioning

confidence: 97%

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Concatenated coding schemes and interleaving techniques over Rayleigh fading ionospheric channels

Nissopoulos

Dimakis

Kouris

2001

Int J Communication

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SUMMARYIn this paper the performance of a concatenated coding scheme is evaluated over a slow Rayleigh fading HF ionospheric link with additive white Gaussian noise (AWGN). Well-known Ungerboeck TCM techniques onto an 8-PSK signal set are used as inner codes and Reed}Solomon block codes as outer codes. The coded/modulated signal is further di!erentially encoded before transmission to combat random phase changes. Block interleaving techniques are necessary to randomise long bursts of errors caused by the fading channel. The performance of the proposed concatenated coding system is investigated for various Doppler spreads. Signi"cant coding gains are achieved over uncoded, diversity or other conventionally coded systems with a small bandwidth expansion. Finally the interesting e!ects of interleaving on the behaviour of the proposed systems are analysed.

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Section: Introductionmentioning

confidence: 97%

“…To satisfy bandwidth requirements and to overcome distortions due to fading, TCM techniques combined with interleaving have been proposed [4,6,7] for a fading mobile channel. These coding/modulation techniques avoid bandwidth expansion and achieve large coding gains in linear AWGN channels [8].…”

Section: Introductionmentioning

confidence: 99%

Concatenated coding schemes and interleaving techniques over Rayleigh fading ionospheric channels

Nissopoulos

Dimakis

Kouris

2001

Int J Communication

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“…The two types of concatenation are serial concatenation and parallel concatenation. The serial concatenated method is used most of the time for power-limited systems such as transmitters on deep-space probe [2]. In this paper we inspect the performance of concatenated codes (Reed Solomon and Convolutional code) with (Turbo and Convolutional [3]) by comparing the bit error 978-1-4673-0210-4112/$31.00 ©20 12 IEEE 676 probability of the above mentioned codes for different modulation schemes.…”

Section: Introductionmentioning

confidence: 99%

Performance augment of multiband OFDM system with ANN assisted concatenated codes

Avila

Vinoth

Praveen

et al. 2012

2012 International Conference on Computing, Electronics and Electrical Technologies (ICCEET)

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with the advent of multi Gbitsls speed communication systems, it has become a high priority to develop and implement high speed and efficient error control codes to make the system reliable. Today's error correction codes are mostly based on single algorithm codes which work for a specific conditions and have their own merits and demerits. In this paper two concatenated error control codes are implemented instead of one on an experimental basis. The main idea is to increase the coding gain while maintaining the high reliability of the system. This code has been tested for M-ary modulation schemes. The two concatenated codes such as reed Solomon with convolution codes and turbo convolution codes with convolutional codes were used in this work. The basic scheme is that one code compensates for the shortcomings for the other and vice versa. Such an errorcontrol code is robust with the error margin being decreased to a very low value thereby making the communication system in which this scheme is implemented highly reliable. Once such a scheme is made available for consumer products, the speed of transmission can be increased multifold.

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“…We can consider two implementations of the sender's action in such a case. 1 First, after finishing the transmission of the rest of the PDU being transmitted, the sender could pause retransmission of the PDUs that have been requested for retransmission. The purpose of this pause is "rapid response to the expiration" of the EOF timer.…”

Section: Preliminariesmentioning

confidence: 99%

“…In many mission scenarios, space networking faces extremely long propagation delays, intermittent link connectivity, limited bandwidth, and limited power budgets. [1]- [3] In response to these factors and the need to automate the communication among spacecraft, the CCSDS File Delivery Protocol (CFDP) has been developed [4]- [9]. The aforementioned mission environments make the conventional Automatic Repeat reQuest (ARQ) schemes impractical [10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of CCSDS file delivery protocol: immediate NAK mode

Baek

Lee²

2005

IEEE Trans. Aerosp. Electron. Syst.

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We analyze the Immediate NAK mode of the CCSDS File Delivery Protocol for the singlehop file transfer operation. We propose a timer setting rule that minimizes the expected time taken to transfer a file under the constraint that the throughput efficiency is maximized. Then, we derive the expected file delivery time and compare it with that of the Deferred NAK mode. The main contribution of this paper is the closed-form expression for evaluating the performance metrics.

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Modulation and coding for satellite and space communications

Cited by 21 publications

References 20 publications

Concatenated coding schemes and interleaving techniques over Rayleigh fading ionospheric channels

Concatenated coding schemes and interleaving techniques over Rayleigh fading ionospheric channels

Performance augment of multiband OFDM system with ANN assisted concatenated codes

Analysis of CCSDS file delivery protocol: immediate NAK mode

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