TABLE OF CONTENTS | ? n , m | path gain from transmit antenna n to receive antenna m |
| ? k | a chi-square RV with 2 k degrees of freedom |
| ? | noise |
| | rotation parameter for constellations |
| ? | SNR |
| ?( N) | Radon function |
| ? | rotation parameter for STBCs |
| b | number of transmit bits per channel use |
| C | capacity |
| C out | outage capacity |
| | set of complex numbers |
| C | T N transmitted codeword |
| | set of super-orthogonal codes |
| d min | minimum distance |
| E s | average power of transmitted symbols |
| f d | Doppler shift |
| G c | coding gain |
| G d | diversity gain |
| G | generating matrix for a STTC |
| | generator matrix for a STBC |
| H | N M channel matrix |
| I | number of states in a trellis |
| J | number of delta functions in the impulse response of a frequency selective fading channel |
| J | number of groups in a combined spatial multiplexing and space-time coding system |
| 2 l | number of branches leaving each state of a trellis |
| K | number of transmitted symbols per block |
| L | number of orthogonal (data) blocks in a SOSTTC |
| L | size of IFFT and FFT blocks in OFDM |
| L-PSK | a PSK constellation with L = 2 b symbols |
| M | number of receive antennas |
| N | number of transmit antennas |
| | T M noise matrix |
| N 0 | noise samples have a variance of N 0/2 per complex dimension |
| P | number of trellis transitions (two trellis paths differ in P transitions) |
| P out | outage probability |
