### Abstract

In this paper, the optimal spectral efficiency (data rate divided by the message bandwidth) that minimizes the probability of causing disruptive interference for ad hoc wireless networks or cognitive radios is investigated. Two basic problem constraints are considered: a given message size, or fixed data rate. Implicitly, the trade being optimized is between longer transmit duration and wider bandwidth versus higher transmit power. Both single-input single-output (SISO) and multiple-input multiple-output (MIMO) links are considered. Here, a link optimizes its spectral efficiency to be a "good neighbor." The probability of interference is characterized by the probability that the signal power received by a hidden node in a wireless network exceeds some threshold. The optimized spectral efficiency is a function of the transmitter-to-hidden-node channel exponent, exclusively. It is shown that for typical channel exponents a spectral efficiency of slightly greater than 1 b/s/Hz per antenna is optimal. It is also shown that the optimal spectral efficiency is valid in the environment with multiple hidden nodes. Also explicit evaluations of the probability of collisions is presented as a function of spectral efficiency.

Original language | English (US) |
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Title of host publication | Conference Record - Asilomar Conference on Signals, Systems and Computers |

Pages | 1588-1592 |

Number of pages | 5 |

DOIs | |

State | Published - 2010 |

Externally published | Yes |

Event | 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 - Pacific Grove, CA, United States Duration: Nov 7 2010 → Nov 10 2010 |

### Other

Other | 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 |
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Country | United States |

City | Pacific Grove, CA |

Period | 11/7/10 → 11/10/10 |

### Fingerprint

### ASJC Scopus subject areas

- Computer Networks and Communications
- Signal Processing

### Cite this

*Conference Record - Asilomar Conference on Signals, Systems and Computers*(pp. 1588-1592). [5757805] https://doi.org/10.1109/ACSSC.2010.5757805

**Minimizing hidden-node network interference by optimizing SISO and MIMO spectral efficiency.** / Bliss, Daniel; Govindasamy, S.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Conference Record - Asilomar Conference on Signals, Systems and Computers.*, 5757805, pp. 1588-1592, 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010, Pacific Grove, CA, United States, 11/7/10. https://doi.org/10.1109/ACSSC.2010.5757805

}

TY - GEN

T1 - Minimizing hidden-node network interference by optimizing SISO and MIMO spectral efficiency

AU - Bliss, Daniel

AU - Govindasamy, S.

PY - 2010

Y1 - 2010

N2 - In this paper, the optimal spectral efficiency (data rate divided by the message bandwidth) that minimizes the probability of causing disruptive interference for ad hoc wireless networks or cognitive radios is investigated. Two basic problem constraints are considered: a given message size, or fixed data rate. Implicitly, the trade being optimized is between longer transmit duration and wider bandwidth versus higher transmit power. Both single-input single-output (SISO) and multiple-input multiple-output (MIMO) links are considered. Here, a link optimizes its spectral efficiency to be a "good neighbor." The probability of interference is characterized by the probability that the signal power received by a hidden node in a wireless network exceeds some threshold. The optimized spectral efficiency is a function of the transmitter-to-hidden-node channel exponent, exclusively. It is shown that for typical channel exponents a spectral efficiency of slightly greater than 1 b/s/Hz per antenna is optimal. It is also shown that the optimal spectral efficiency is valid in the environment with multiple hidden nodes. Also explicit evaluations of the probability of collisions is presented as a function of spectral efficiency.

AB - In this paper, the optimal spectral efficiency (data rate divided by the message bandwidth) that minimizes the probability of causing disruptive interference for ad hoc wireless networks or cognitive radios is investigated. Two basic problem constraints are considered: a given message size, or fixed data rate. Implicitly, the trade being optimized is between longer transmit duration and wider bandwidth versus higher transmit power. Both single-input single-output (SISO) and multiple-input multiple-output (MIMO) links are considered. Here, a link optimizes its spectral efficiency to be a "good neighbor." The probability of interference is characterized by the probability that the signal power received by a hidden node in a wireless network exceeds some threshold. The optimized spectral efficiency is a function of the transmitter-to-hidden-node channel exponent, exclusively. It is shown that for typical channel exponents a spectral efficiency of slightly greater than 1 b/s/Hz per antenna is optimal. It is also shown that the optimal spectral efficiency is valid in the environment with multiple hidden nodes. Also explicit evaluations of the probability of collisions is presented as a function of spectral efficiency.

UR - http://www.scopus.com/inward/record.url?scp=79957986679&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79957986679&partnerID=8YFLogxK

U2 - 10.1109/ACSSC.2010.5757805

DO - 10.1109/ACSSC.2010.5757805

M3 - Conference contribution

AN - SCOPUS:79957986679

SN - 9781424497218

SP - 1588

EP - 1592

BT - Conference Record - Asilomar Conference on Signals, Systems and Computers

ER -