Research output: Contribution to Journal/Magazine › Journal article › peer-review
| Article number | 10370179 |
|---|---|
| <mark>Journal publication date</mark> | 12/2008 |
| <mark>Journal</mark> | IEEE Communications Letters |
| Issue number | 12 |
| Volume | 12 |
| Number of pages | 6 |
| Pages (from-to) | 865-870 |
| Publication Status | Published |
| <mark>Original language</mark> | English |
The two main constraints on the transmit power allocation of the secondary service in a spectrum sharing scheme are the received interference threshold at the primary receiver, and the maximum transmit power of the secondary user. We obtain a critical system parameter which relates these two constraints and enables the system designer to eliminate the interference threshold constraint by adjusting the maximum transmit power of the secondary users. Eliminating the interference threshold constraint significantly reduces the system complexity by making the power allocation of the secondary service independent from the channel state information between the secondary transmitter and the primary receiver; thus removes the need for signaling between primary and secondary systems.