QoS Provisioning in Multi-hop CDMA Networks through Rate Adaptation

In this paper, we utilize rate adaptation for Quality of Service (QoS) provisioning in multi-hop CDMA networks where multiple classes are considered. We quantify the interference resulting from each class. Based on the requirements and the resulting interference from ongoing calls of each class, achievable data rate and bit error rate (BER) are determined. We quantify the level of degradation required of a given class to achieve a desirable QoS of the other class. Maintaining a certain QoS also requires power adjustment. To this effect, we propose a generic rate adaptation and power adjustment (RAPA) scheme. RAPA adapts the quality of classes within pre-determined thresholds. The operation of RAPA is illustrated through examples.