Frequency domain multi-user receivers for IEEE 802.15.4a short-range communication network

In this letter, we propose frequency domain receivers for an IEEE 802.15.4a short-range communication network: the uplink case is taken into account, considering a scenario where several devices communicate with a coordinator node. The channel model has been also derived according to the IEEE 802.15.4a recommendations. Results show that the proposed approach can be beneficial in short-range systems under severe conditions of multipath propagation and interference. An interesting novelty of the proposed approach is that both single-user and multi-user FD receivers based on the minimum mean square error criterion can be derived by exploiting the zero padding technique which is intrinsic in the symbol structure of the standard.