Title :
On the impact of system resource constraints on wireless relaying channels
Author :
Boyer, John ; Falconer, David D. ; Yanikomeroglu, Halim
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada
Abstract :
The paper considers the impact of various system resource constraints on the connectivity and performance of relaying channels. This consideration is motivated by recent findings indicating that the performance of wireless relaying networks can be increased through the application of distributed spatial diversity techniques (e.g., multi-user diversity, multihop diversity, cooperative diversity) that rely on the mesh connectivity between wireless terminals. Relevant system resource constraints are introduced, constraint combinations are analyzed, and resultant system connectivity models are derived and compared via simulation. The constraints considered are the available number of orthogonal relaying channels, the ability of relays to diversity-combine signals, the ability of the destination to diversity-combine signals, the ability of receivers to diversity-combine signals on multiple orthogonal channels, and the ability of transmitters to transmit signals on multiple orthogonal channels. The analysis of these system resource constraints is applicable to both amplified (non-regenerative, amplify-and-forward) relaying and decoded (regenerative, decode-and-forward) relaying.
Keywords :
diversity reception; radio receivers; radio repeaters; radio transmitters; telecommunication channels; amplified relaying; amplify-and-forward relaying; connectivity; cooperative diversity; decode-and-forward relaying; decoded relaying; distributed spatial diversity techniques; diversity combining; multi-user diversity; multihop diversity; multiple orthogonal channels; orthogonal relaying channels; system resource constraints; wireless relaying networks; Analytical models; Application software; Broadband communication; Costs; Decoding; Relays; Spread spectrum communication; Systems engineering and theory; Transmitters; Wireless communication;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1495027