A low complexity rake receiver for ultra-wideband systems

In this paper we introduce a low complexity RAKE receiver for ultra-wideband (UWB) systems which employs group decision general selection combining (GD-GSC). Considering the high data rate requirements and multipath-rich transmission environment of UWB systems, the proposed design provides good performance with low complexity. We present the receiver structure, and evaluate the performance and complexity of the proposed system with a practical multipath fading channel model.

[1]  James D. Taylor,et al.  Introduction to Ultra-Wideband Radar Systems , 1995 .

[2]  John G. Proakis,et al.  Digital Communications , 1983 .

[3]  Ian Oppermann,et al.  UWB Theory and Applications: Oppermann/UWB: Theory and Applications , 2005 .

[4]  Bartosz Mielczarek,et al.  Performance of coherent UWB Rake receivers with channel estimators , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[5]  Mohamed-Slim Alouini,et al.  Performance analysis of generalized selective combining over Rayleigh fading channels , 1999, 1999 IEEE Communications Theory Mini-Conference (Cat. No.99EX352).

[6]  Li Zhao,et al.  The capacity of an UWB multiple-access communications system , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[7]  Hong-Chuan Yang,et al.  A practical RAKE combining scheme for synchronous CDMA systems , 2005, IEEE Wireless Communications and Networking Conference, 2005.

[8]  Moe Z. Win,et al.  A statistical model for the UWB indoor channel , 2001, IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202).

[9]  Mohamed-Slim Alouini,et al.  Performance analysis of generalized selection combining with threshold test per branch (T-GSC) , 2001, GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270).

[10]  Dong Sam Ha,et al.  Minimum selection GSC and adaptive low-power rake combining scheme , 2003, Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03..

[11]  Tomoaki Ohtsuki,et al.  Pre-RAKE diversity combining for UWB systems in IEEE 802.15 UWB multipath channel , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[12]  Jean-Yves Chouinard,et al.  Selection diversity combining with multiple antennas for MM-wave indoor wireless channels , 1996, IEEE J. Sel. Areas Commun..

[13]  P. E. Green,et al.  A Communication Technique for Multipath Channels , 1958, Proceedings of the IRE.

[14]  Weihua Zhuang,et al.  Ultra-wideband wireless communications , 2005, Wirel. Commun. Mob. Comput..

[15]  Huseyin Arslan,et al.  RAKE receiver finger assignment for ultra-wideband radio , 2003, 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications - SPAWC 2003 (IEEE Cat. No.03EX689).

[16]  Asrar U. H. Sheikh,et al.  Combining schemes in rake receiver for low spreading factor long-code W-CDMA systems , 2000 .

[17]  Moe Z. Win,et al.  Impulse radio: how it works , 1998, IEEE Communications Letters.

[18]  Robert Sedgewick,et al.  Algorithms in C - parts 1-4: fundamentals, data structures, sorting, searching (3. ed.) , 1997 .