The effect of time synchronization errors on the performance of cooperative MISO systems

Jagannathan, S.; Aghajan, Hamid; Goldsmith, Andrea

doi:10.1109/glocomw.2004.1417557

Cited by 84 publications

(53 citation statements)

References 9 publications

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“…Furthermore, vn and wn are assumed to be independent white Gaussian noise sequences with vn ∼ Nv(0, Γ) and wn ∼ Nw(0, σ 2 w I |C| ), where Γ is derived from (11). In (12), the matrix G = I 2|I|+|C| is called transition matrix, and h(·) is the vector form of the nonlinear measurement equation (5). Based on (9) and (11), the state-space model of (12) can be written in terms of transition and emission distributions as…”

Section: Distributed Filteringmentioning

confidence: 99%

See 1 more Smart Citation

Distributed clock synchronization and ranging in time-variant wireless networks

Bartel

Etzlinger

Springer

2014

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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Clock synchronization and ranging are important topics in the field of wireless networks, where internode time measurement allows both tasks to be completed in one. Such networks are generally time-variant due to possible changes in environmental conditions and mobility of network nodes. We present a fully distributed filtering algorithm for combined clock synchronization and ranging based on message passing by belief propagation on a factor graph representation of a time-variant wireless network. The resulting message passing equations can be interpreted as a variant of Kalman filtering locally on each network node. Simulation results show that tracking estimation parameters improves estimation accuracy significantly without additional communication effort.

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Section: Distributed Filteringmentioning

confidence: 99%

“…In addition, emerging application areas require internode distance estimation [4][5][6], also referred to as ranging. Clock synchronization can be seen as the key to achieving a shared notion of time.…”

Section: Introductionmentioning

confidence: 99%

Distributed clock synchronization and ranging in time-variant wireless networks

Bartel

Etzlinger

Springer

2014

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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“…The baseline system for cooperative MIMO communication with the transceivers being always on is equipped with CMAC ON protocol as proposed and evaluated in (Jagannathan et al, 2004). Meanwhile, the baseline system for cooperative MIMO with a periodic wake-up cycle for the transceiver is equipped with the CMAC protocol as proposed and explained in sub-section 3.2.…”

Section: System Descriptionmentioning

confidence: 99%

Energy Efficient Cooperative MAC Protocols in Wireless Sensor Networks

Ahmad¹,

Dutkiewicz²,

Huang³

2011

Wireless Sensor Networks

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“…For instance, in cooperative MIMO systems in which the antennas are physically separated, timing synchronisation is a major issue, and this has been investigated in literature including [23] and [24]. As established in previous reports on SM, the performance of SM technique is highly dependent on the dissimilarity of the channel gains of the transmit-receive paths [1], [2], [25].…”

mentioning

confidence: 99%

Effect of Synchronization Error on Optical Spatial Modulation

Olanrewaju

Popoola

2017

IEEE Trans. Commun.

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Abstract-This work examines the effect of synchronisation error on the performance of spatial modulation (SM) technique in optical wireless communication (OWC) systems. SM exploits the deployment of multiple transmitters by encoding user information on their spatial domain. In most works related to SM, a perfect synchronisation among these multiple transmitters is assumed. However, synchronisation error can result from multipath propagation in OWC channel, and clock jitter and variation in propagation delay of each transmitter. Such error in synchronisation degrades system performance and hence the need to investigate its effect. Using union bound technique, and defining synchronisation errors as timing offsets in the received signals, we derive the symbol error rate for space shift keying (SSK), generalised SSK (GSSK), SM and generalised SM (GSM) schemes, and we validate our analysis with tightly-matched simulation results. Results show degradation in performance increases with synchronisation error. While SSK is tolerant for a small range of synchronisation error, GSSK, SM and GSM are significantly impaired. Our results also demonstrate the dependence of SM on channel gain values. We observe that the lower the channel gain of the transmitter in which synchronisation error occurs, the lesser the impact of the synchronisation error on the system performance.

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The effect of time synchronization errors on the performance of cooperative MISO systems

Cited by 84 publications

References 9 publications

Distributed clock synchronization and ranging in time-variant wireless networks

Distributed clock synchronization and ranging in time-variant wireless networks

Energy Efficient Cooperative MAC Protocols in Wireless Sensor Networks

Effect of Synchronization Error on Optical Spatial Modulation

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