TY - GEN
T1 - Multi-source cooperation with full-diversity spectral-efficiency and controllable-complexity
AU - Ribeiro, Alejandro
AU - Wang, Renqiu
AU - Giannakis, Georgios B
PY - 2006
Y1 - 2006
N2 - We develop a general framework for multi-source cooperation (MSC) protocols to improve diversity and spectral efficiency relative to repetition based alternatives that rely on single-source cooperation. The novel protocols are flexible to balance tradeoffs among diversity, spectral efficiency and decoding-complexity. Users are grouped in clusters and follow a two-phase MSC protocol which involves time division multiple access (TDMA) to separate users within a cluster, and code division multiple access (CDMA) to separate clusters. An attractive protocol under the general MSC framework, relies on distributed complex field coding (DCFC) to enable diversity order equal to the number of users per cluster. Cluster separation based on orthonormal spreading sequences leads to spectral efficiency 1/2. When the number of clusters exceeds the amount of spreading, spectral efficiency can be enhanced without sacrificing diversity, at the expense of controllable increase in complexity.
AB - We develop a general framework for multi-source cooperation (MSC) protocols to improve diversity and spectral efficiency relative to repetition based alternatives that rely on single-source cooperation. The novel protocols are flexible to balance tradeoffs among diversity, spectral efficiency and decoding-complexity. Users are grouped in clusters and follow a two-phase MSC protocol which involves time division multiple access (TDMA) to separate users within a cluster, and code division multiple access (CDMA) to separate clusters. An attractive protocol under the general MSC framework, relies on distributed complex field coding (DCFC) to enable diversity order equal to the number of users per cluster. Cluster separation based on orthonormal spreading sequences leads to spectral efficiency 1/2. When the number of clusters exceeds the amount of spreading, spectral efficiency can be enhanced without sacrificing diversity, at the expense of controllable increase in complexity.
UR - https://www.scopus.com/pages/publications/48749126677
UR - https://www.scopus.com/pages/publications/48749126677#tab=citedBy
U2 - 10.1109/SPAWC.2006.346422
DO - 10.1109/SPAWC.2006.346422
M3 - Conference contribution
AN - SCOPUS:48749126677
SN - 078039710X
SN - 9780780397101
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
BT - 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
T2 - 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Y2 - 2 July 2006 through 5 July 2006
ER -