Download now Free registration required
In OFDMA systems, Channel Quality Information (CQI) feedback is used to determine the modulation and coding level of a Mobile Station (MS). When the MS uses diversity, it transmits the CQI feedback information which contains channel condition which is averaged over all the sub-bands allocated to itself. In conventional CQI feedback scheme, every MS should send its own CQI feedback. So, as the number of MSs in the system increases, the amount of CQI feedbacks increases too, and it results in the reduction of system throughput. To solve this problem, the authors have proposed a new CQI feedback scheme.
- Format: PDF
- Size: 159.64 KB