TY - GEN
T1 - Beamforming algorithms for amplify-and-forward relaying in wireless networks
AU - Abdallah, Mohamed M.
AU - Papadopoulos, Haralabos C.
PY - 2005
Y1 - 2005
N2 - We develop beamforming algorithms for information relaying over shared non- selective fading channels in wireless sensor networks. We consider an amplify- and-forward relay setting whereby the received relay data are first scaled prior to forwarding to a destination via beamforming over a shared channel. The beam- forming weights are broadcasted by the destination to the relays and are formed based on the individual relay-destination channel coefficients and an m-bit description of the source-relay channel coefficients. We present a method for choosing the m-bit quantizer function, employed at the relays to encode the source-relay channel quality levels, that optimizes the uncoded bit error rates at the destination. As our simulations and analysis reveal, using a coarse single bit description of each source-relay channel coefficient results in a small increase of the uncoded bit error rates at the destination.
AB - We develop beamforming algorithms for information relaying over shared non- selective fading channels in wireless sensor networks. We consider an amplify- and-forward relay setting whereby the received relay data are first scaled prior to forwarding to a destination via beamforming over a shared channel. The beam- forming weights are broadcasted by the destination to the relays and are formed based on the individual relay-destination channel coefficients and an m-bit description of the source-relay channel coefficients. We present a method for choosing the m-bit quantizer function, employed at the relays to encode the source-relay channel quality levels, that optimizes the uncoded bit error rates at the destination. As our simulations and analysis reveal, using a coarse single bit description of each source-relay channel coefficient results in a small increase of the uncoded bit error rates at the destination.
UR - http://www.scopus.com/inward/record.url?scp=84961876946&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84961876946
T3 - 43rd Annual Allerton Conference on Communication, Control and Computing 2005
SP - 337
EP - 346
BT - 43rd Annual Allerton Conference on Communication, Control and Computing 2005
PB - University of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
T2 - 43rd Annual Allerton Conference on Communication, Control and Computing 2005
Y2 - 28 September 2005 through 30 September 2005
ER -