A contention-based multi-antenna access request transmissionreceiving procedure in MIMO OFDMOFDMA systems is provided to reduce access latency. There are also provided low profile wire-bond packages which are produced in accordance with the method pursuant to the invention. A humane method for euthanasia involves administering the composition to animals for which euthanasia is desired. That results in an extremely broad OPO bandwidth. A fault is detected in the current link in the point-to-multipoint tree.