Modelling and analysis of spread spectrum signalling with multiple receivers for distributed wireless in-building networks

The authors present the model and performance analysis of a distributed wireless-in-building network (DWIBN) employing slotted Aloha multiaccess with direct-sequence spread-spectrum (DS/SS) signaling and multiple receivers to combat multipath and multiaccess interference and the near-far effect. The system is shown to offer high throughput capacity. Under overload traffic, the system is capable of maintaining a high throughput without significant increase in delays. The effectiveness of using multiple receivers to increase the channel throughput, decrease the packet waiting time, and minimize the near-far effect, especially under high packet input rate, is demonstrated