Wireless Mesh Networks

Kruys, Jan; Qian, Luke

doi:10.1017/cbo9780511611421.019

Cited by 2 publications

(4 citation statements)

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“…These results can be compared to the random arrival model used by the ITU in [3], and discussed further in [5]. The model (briefly discussed in Section II) assumes a Bernoulli distribution with probability p of detecting a single radar pulse.…”

Section: Evidence Of Model Mismatchmentioning

confidence: 99%

“…The conclusion was that, from the radars' perspective, the RLAN introduced additive, uncorrelated noise. The authors note that the DFS would detect the radar sooner than the RLAN would corrupt the radar, an idea also quantified in [5].…”

Section: Introductionmentioning

confidence: 95%

“…In [4], [5], DFS was tested using an IEEE 802.11a radio LAN (RLAN) system operating in the vicinity of a Doppler weather radar system. The conclusion was that, from the radars' perspective, the RLAN introduced additive, uncorrelated noise.…”

Section: Introductionmentioning

confidence: 99%

“…Some effort has been made to spur research in this direction [5]; mention was made of TDD radio operation, but no consideration to TDD operation was provided in the analysis, and a random probability of pulse detection was used. Calculation of radar detection probabilities used in the FCC and ETSI standards were initially simulated using a basic random RLAN transmission model [3].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of radar detection probabilities in time division duplexed systems

Zarikoff

Leith

2012

2012 IEEE International Conference on Communications (ICC)

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Abstract-Dynamic Frequency Selection (DFS) is the technology chosen by ETSI, FCC, and Industry Canada to provide unlicensed access for broadband radios in licensed bands. It may be viewed as a basic form of cognitive radio, where broadband radios share spectrum with radar users, and is implemented by the basestation or basestation/subscriber combination. This work looks at the likelihood that a radar pulse burst can be detected in a time-division duplexed (TDD) system with radar detection restricted to the basestation. In such a system, a periodic 'quiet time' is enforced. Compared to past assumptions on the structure of the radar and radio transmission, namely that both are random, the results shown here suggest that TDD systems will find it difficult or impossible to achieve current FCC and ETSI requirements with certain frame/schedule durations. We present expressions for the number of detected pulses and simulations that demonstrate the trade-offs of varying the uplink/downlink rate and frame/schedule duration.

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Section: Evidence Of Model Mismatchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%