DocumentCode :
2071099
Title :
SNR Analysis of Multi-Rate IR-UWB over Frequency-Selective Channels
Author :
Wymeersch, Henk ; Zussman, Gil ; Win, Moe Z.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge
fYear :
2007
fDate :
24-26 Sept. 2007
Firstpage :
545
Lastpage :
550
Abstract :
This paper is motivated by the need to design medium access control (MAC) protocols for impulse radio ultra-wide bandwidth (UWB) systems. Such protocols should determine how power and data rates should be allocated in order to optimize some performance measure. In order to develop a UWB MAC protocol, there is a need to gain insight on how the signal-to-noise ratio (SNR) is affected by different users transmitting with different rates and different power levels. In this paper, we obtain the SNR in a multi-rate system operating in a multi-path environment with time-hopping and/or direct-sequence spreading. We show that the SNR in a time-hopping system is highly affected by the low-rate users.
Keywords :
access protocols; spread spectrum communication; ultra wideband communication; wireless channels; MAC protocols; SNR analysis; direct-sequence spreading environment; frequency-selective channels; impulse radio ultrawide bandwidth systems; medium access control; multirate IR-UWB; multirate system; signal-to-noise ratio; time-hopping environment; Access protocols; Bandwidth; Electronic mail; Frequency; Gas insulated transmission lines; Media Access Protocol; Multiple access interference; Physical layer; Power system reliability; Radio transmitters; Ultrawide bandwidth (UWB); impulse radio; medium access control (MAC); multi-path; multi-rate; signal-to-noise ratio (SNR);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultra-Wideband, 2007. ICUWB 2007. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-0521-3
Electronic_ISBN :
978-1-4244-0521-3
Type :
conf
DOI :
10.1109/ICUWB.2007.4381005
Filename :
4381005
Link To Document :
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