Sentence examples for select spreading from inspiring English sources

The extension of this work in MIMO-CDMA systems is discussed in [3], where two main techniques to select spreading waveforms are explained.

Figure 8 4×4 MIMO-CDMA system employing parity bit selected spreading.

The selected spreading code is then used to spread the signals in all transmit antennas.

Parity bit selected spreading for CDMA systems is first introduced in [1].

Performance of the turbo multiuser receiver in a 4×1 MIMO-CDMA system that employs parity bit selected spreading.

For example, in [9], the authors present a Turbo MC-CDMA system employing the parity bit selected spreading technique.

When parity bit selected spreading is used, the parity bits generated by a linear block encoder are used to select a spreading code from a set of orthogonal spreading sequences.

The selection of spreading waveform for each transmit antenna in such systems follows Table 1. Figure 7 4×1 MIMO-CDMA system employing parity bit selected spreading.

Comparison of the simulation results of systems with parity bit selected and permutation spreading shows that when permutation spreading is used, greater BER performance gain is achieved compared to parity bit selected spreading.

Figure 3 BER for the MIMO-CDMA system employing parity bit selected spreading with N t =4 and N r =1. Figure 4 BER for the MIMO-CDMA system employing parity bit selected spreading with N t =4 and N r =4.

Contrary to the MIMO-CDMA system that employs parity bit selected spreading, in MIMO-CDMA system employing permutation spreading, depending on the coset the message comes from, different permutation of spreading waveforms are assigned to transmit antennas.