Title :
On the capacity of the blockwise incoherent MPSK channel
Author :
Peleg, Michael ; Shamai, Shlomo
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
fDate :
5/1/1998 12:00:00 AM
Abstract :
The capacity of M-ary phase-shift keying (MPSK) over an additive white Gaussian noise (AWGN) channel with carrier phase unknown but constant over L symbols is investigated. It is shown that capacity-achieving channel inputs are uniformly distributed and independent MPSK symbols. Capacity over a range of signal-to-noise ratio (SNR) and L is presented for binary phase-shift keying (BPSK) and quaternary phase-shift keying (QPSK). Upper and lower easy-to-compute bounds on capacity are derived. It is proven that for large L the coherent capacity is approached. An analytic asymptotic expression for low L·SNR is derived exhibiting the expected quadratic dependence on the SNR
Keywords :
Gaussian channels; channel capacity; phase shift keying; quadrature phase shift keying; AWGN channel; BPSK; M-ary phase-shift keying; QPSK; additive white Gaussian noise channel; analytic asymptotic expression; binary phase-shift keying; blockwise incoherent MPSK channel; capacity; capacity-achieving channel inputs; carrier phase; coherent capacity; lower bounds; quadratic dependence; quaternary phase-shift keying; signal-to-noise ratio; upper bounds; AWGN; Additive white noise; Binary phase shift keying; Channel capacity; Convolutional codes; Fading; Iterative decoding; Phase shift keying; Signal to noise ratio; Spread spectrum communication;
Journal_Title :
Communications, IEEE Transactions on
