TY - JOUR
T1 - Ultra-wideband impulse radio systems with multiple pulse types
AU - Gezici, Sinan
AU - Sahinoglu, Zafer
AU - Kobayashi, Hisashi
AU - Poor, H. Vincent
N1 - Funding Information:
Manuscript received March 3, 2005; revised October 15, 2005. This work was supported in part by the National Science Foundation under Grant ANI-03-38807 and in part by the New Jersey Center for Wireless Telecommunications. This paper was presented in part at the 39th Annual Conference on Information Science and Systems, Baltimore, MD, March 16–18, 2005.
PY - 2006/4
Y1 - 2006/4
N2 - In an ultra-wideband (UWB) impulse radio (IR) system, a number of pulses, each transmitted in an interval called a "frame," is employed to represent one information symbol. Conventionally, a single type of UWB pulse is used in all frames of all users. In this paper, IR systems with multiple types of UWB pulses are considered, where different types of pulses can be used in different frames by different users. Both stored-reference (SR) and transmitted-reference (TR) systems are considered. First, the spectral properties of a multipulse IR system with polarity randomization is investigated. It is shown that the average power spectral density is the average of the spectral contents of different pulse shapes. Then, approximate closed-form expressions for the bit-error probability of a multipulse SR-IR system are derived for Rake receivers in asynchronous multiuser environments. The effects of both interframe interference (IFI) and multiple-access interference (MAI) are analyzed. The theoretical and simulation results indicate that SR-IR systems that are more robust against IFI and MAI than a "conventional" SR-IR system can be designed with multiple types of ultra-wideband pulses. Finally, extensions to multipulse TR-IR systems are briefly described.
AB - In an ultra-wideband (UWB) impulse radio (IR) system, a number of pulses, each transmitted in an interval called a "frame," is employed to represent one information symbol. Conventionally, a single type of UWB pulse is used in all frames of all users. In this paper, IR systems with multiple types of UWB pulses are considered, where different types of pulses can be used in different frames by different users. Both stored-reference (SR) and transmitted-reference (TR) systems are considered. First, the spectral properties of a multipulse IR system with polarity randomization is investigated. It is shown that the average power spectral density is the average of the spectral contents of different pulse shapes. Then, approximate closed-form expressions for the bit-error probability of a multipulse SR-IR system are derived for Rake receivers in asynchronous multiuser environments. The effects of both interframe interference (IFI) and multiple-access interference (MAI) are analyzed. The theoretical and simulation results indicate that SR-IR systems that are more robust against IFI and MAI than a "conventional" SR-IR system can be designed with multiple types of ultra-wideband pulses. Finally, extensions to multipulse TR-IR systems are briefly described.
KW - Multipulse impulse radio (IR)
KW - Performance analysis
KW - Stored-reference (SR)
KW - Transmitted-reference (TR)
KW - Ultra-wideband (UWB)
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U2 - 10.1109/JSAC.2005.863880
DO - 10.1109/JSAC.2005.863880
M3 - Article
AN - SCOPUS:33947319318
SN - 0733-8716
VL - 24
SP - 892
EP - 898
JO - IEEE Journal on Selected Areas in Communications
JF - IEEE Journal on Selected Areas in Communications
IS - 4 I
ER -